Data / Nonprofits / Texas / Environment
Environment nonprofits in Texas: 1,353 registered with the IRS
1,353 environment nonprofits are registered with the IRS in Texas, 1,281 of them 501(c)(3) charities; the 395 that report revenue took in $791.7 million. The most are in Austin (166), Houston (155), Dallas (70). The largest by revenue: Great Hearts America-Texas ($148.6 million), Alliance To End Plastic Waste Inc ($68.3 million), Big Country Electric Cooperative Inc ($38.6 million).
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The 500 largest by revenue
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Great Hearts America-Texas | San Antonio | 501(c)(3) | 2003 | $148.6 million | $356.9 million | 2025-06 |
| Alliance To End Plastic Waste Inc | Austin | 501(c)(3) | 2020 | $68.3 million | $169.8 million | 2024-12 |
| Big Country Electric Cooperative Inc | Roby | 501(c)(12) | 1999 | $38.6 million | $130.4 million | 2024-12 |
| Dallas Arboretum & Botanical | Dallas | 501(c)(3) | 1974 | $32.2 million | $124.3 million | 2024-12 |
| Buffalo Bayou Partnership | Houston | 501(c)(3) | 1986 | $31 million | $127.1 million | 2024-12 |
| International Sustainable Energy Foundation | Austin | 501(c)(3) | 2021 | $30.1 million | $48.2 million | 2024-12 |
| Texas Agricultural Land Trust | San Antonio | 501(c)(3) | 2007 | $27.8 million | $8 million | 2025-03 |
| Coastal Conservation Association | Houston | 501(c)(3) | 1978 | $27.7 million | $46.8 million | 2024-12 |
| Memorial Park Conservancy Inc | Houston | 501(c)(3) | 2000 | $22 million | $57.6 million | 2025-05 |
| Galveston Bay Foundation | Kemah | 501(c)(3) | 1988 | $20.2 million | $48.2 million | 2024-12 |
| Coastal Prairie Conservancy | Houston | 501(c)(3) | 1992 | $19.9 million | $46.6 million | 2024-12 |
| Parks and Wildlife Foundation of Texas Inc | Dallas | 501(c)(3) | 1991 | $19.9 million | $91.2 million | 2024-12 |
| Hermann Park Conservancy | Houston | 501(c)(3) | 1991 | $15.5 million | $65.9 million | 2025-06 |
| Coastal Bend Bays & Estuaries Program | Corp Christi | 501(c)(3) | 2002 | $12.6 million | $40.3 million | 2025-08 |
| San Antonio Botanical Garden Society Inc | San Antonio | 501(c)(3) | 1981 | $10.9 million | $50.9 million | 2025-09 |
| Fossil Rim Wildlife Center Inc | Glen Rose | 501(c)(3) | 1990 | $8.3 million | $24.9 million | 2025-12 |
| Armand Bayou Nature Center Inc | Houston | 501(c)(3) | 1974 | $7.8 million | $8.9 million | 2024-12 |
| Houston Botanic Garden | Houston | 501(c)(3) | 2002 | $7.6 million | $31.9 million | 2024-12 |
| Hill Country Conservancy Inc | Austin | 501(c)(3) | 2001 | $7.4 million | $39.6 million | 2025-12 |
| Diamond Bar Conservation | San Antonio | 501(c)(3) | 2024 | $6.6 million | $8.1 million | 2025-09 |
| Timberview Farmstead Inc | Fort Worth | 501(c)(3) | 2023 | $6.5 million | $12.8 million | 2024-12 |
| Houston Audubon Society | Houston | 501(c)(3) | 1970 | $5.3 million | $17.9 million | 2025-06 |
| Pecan Street Inc | Austin | 501(c)(3) | 2010 | $5.3 million | $3.9 million | 2025-09 |
| The Trail Conservancy | Austin | 501(c)(3) | 2003 | $5.1 million | $9.8 million | 2025-12 |
| Taking Care of Texas | Austin | 501(c)(3) | 2012 | $5 million | $5.7 million | 2024-12 |
| Friends of Cibolo Wilderness | Boerne | 501(c)(3) | 1990 | $4.9 million | $20.9 million | 2024-12 |
| Houston Arboretum & Nature Center | Houston | 501(c)(3) | 1967 | $4.4 million | $8.2 million | 2025-06 |
| Friends of the Katy Trail Inc | Dallas | 501(c)(3) | 1997 | $4.4 million | $5.2 million | 2024-12 |
| Dallas Arboretum Foundation | Dallas | 501(c)(3) | 2018 | $4.4 million | $26.2 million | 2024-12 |
| American Conservation Foundation Inc | Gatesville | 501(c)(3) | 2020 | $4.3 million | $9 million | 2025-12 |
| Vasudha Foundation USA Inc | Sugar Land | 501(c)(3) | 2014 | $3.5 million | $2 million | 2025-12 |
| Consumer Energy Alliance Inc | Houston | 501(c)(4) | 2008 | $3.5 million | $1.8 million | 2025-12 |
| Texas Water Foundation Inc | Austin | 501(c)(3) | 1999 | $3.3 million | $1.7 million | 2025-12 |
| Cca Texas Fund | Houston | 501(c)(3) | 1990 | $3.1 million | $20.7 million | 2024-12 |
| National Network of Abortion Funds | Austin | 501(c)(3) | 1994 | $3 million | $8.1 million | 2024-12 |
| Headwaters at the Comal | New Braunfels | 501(c)(3) | 2017 | $2.9 million | $2 million | 2025-12 |
| Colorado River Land Trust Inc | Dripping SPGS | 501(c)(3) | 2014 | $2.9 million | $4.6 million | 2025-06 |
| Switch Energy Alliance | Austin | 501(c)(3) | 2017 | $2.8 million | $3.4 million | 2025-12 |
| Great Springs Project Inc | Austin | 501(c)(3) | 2019 | $2.8 million | $3.6 million | 2025-12 |
| National Network of Abortion Funds | Austin | 501(c)(3) | 1994 | $2.7 million | $6.8 million | 2025-06 |
| Houston Regional Monitoring Corporation | Baytown | 501(c)(3) | 2006 | $2.7 million | $2.1 million | 2024-12 |
| Wildlife Conservation International | Austin | 501(c)(3) | 2020 | $2.5 million | $818,969 | 2025-12 |
| Blockchain for Energy Inc | Houston | 501(c)(6) | 2022 | $2.5 million | $826,235 | 2024-12 |
| Urban Harvest Inc | Houston | 501(c)(3) | 1996 | $2.4 million | $3 million | 2025-12 |
| River Bend Nature Works | Wichita Falls | 501(c)(3) | 1995 | $2.1 million | $8.6 million | 2024-12 |
| National Network of Abortion Funds | Dallas | 501(c)(3) | 1994 | $2.1 million | $3.3 million | 2025-06 |
| Air Alliance Houston | Houston | 501(c)(3) | 1995 | $2 million | $3.9 million | 2025-06 |
| Ecorise Youth Innovations | Austin | 501(c)(3) | 2012 | $1.9 million | $1.4 million | 2025-07 |
| San Antonio River Foundation | San Antonio | 501(c)(3) | 2003 | $1.9 million | $5.3 million | 2025-06 |
| Artist Boat Inc | Galveston | 501(c)(3) | 2023 | $1.9 million | $25.6 million | 2025-08 |
| Hill Country Alliance | Dripping SPGS | 501(c)(3) | 2005 | $1.9 million | $2.2 million | 2024-12 |
| Texas Land Conservancy | Austin | 501(c)(3) | 1982 | $1.9 million | $21.6 million | 2024-12 |
| DSC Foundation Inc | Dallas | 501(c)(3) | 2016 | $1.9 million | $2.7 million | 2024-12 |
| Caddo Lake Institute Inc | Karnack | 501(c)(3) | 2006 | $1.7 million | $2.8 million | 2025-12 |
| Keep Austin Beautiful Inc | Austin | 501(c)(3) | 1985 | $1.7 million | $511,623 | 2025-07 |
| Gardopia Gardens | San Antonio | 501(c)(3) | 2016 | $1.6 million | $911,545 | 2025-05 |
| Willow Waterhole Greenspace Conservancy Inc | Houston | 501(c)(3) | 2001 | $1.6 million | $3.6 million | 2024-12 |
| Water Environment Association of Texas | Austin | 501(c)(3) | 1979 | $1.6 million | $2 million | 2024-12 |
| Arboretum San Antonio | San Antonio | 501(c)(3) | 2022 | $1.5 million | $2.5 million | 2024-12 |
| Turtle Creek Conservancy | Dallas | 501(c)(3) | 1995 | $1.5 million | $1.9 million | 2024-12 |
| Rgisc Inc | Laredo | 501(c)(3) | 1995 | $1.5 million | $932,780 | 2024-12 |
| Texas Recreation & Park Society | Jonestown | 501(c)(3) | 2006 | $1.4 million | $1.9 million | 2024-12 |
| Evolve Houston | Houston | 501(c)(3) | 2020 | $1.4 million | $1.4 million | 2024-12 |
| Bayou Bend Gardens Endowment | Houston | 501(c)(3) | 1966 | $1.4 million | $12.3 million | 2025-06 |
| Texas Water Trade | Austin | 501(c)(3) | 2019 | $1.4 million | $3 million | 2025-06 |
| Houston Parks Board Foundation | Houston | 501(c)(3) | 2011 | $1.4 million | $8.1 million | 2025-06 |
| Dallas Ecological Foundation | Dallas | 501(c)(3) | 1981 | $1.3 million | $2.6 million | 2025-06 |
| Texas Solar Power Association | Austin | 501(c)(6) | 2015 | $1.3 million | $1.1 million | 2025-12 |
| Bexar Land Trust Inc | San Antonio | 501(c)(3) | 1998 | $1.3 million | $3.9 million | 2024-12 |
| National Network of Abortion Funds | McAllen | 501(c)(3) | 1994 | $1.2 million | $3 million | 2025-06 |
| Greenspace Dallas | Irving | 501(c)(3) | 2007 | $1.2 million | $1.5 million | 2025-12 |
| South Texas Botanical Gardens & Nature Center | Corp Christi | 501(c)(3) | 1984 | $1.2 million | $2.1 million | 2024-12 |
| Texas Floodplain Managementassociation | Leander | 501(c)(3) | 2007 | $1.2 million | $875,946 | 2025-12 |
| Nash-Forreston Water Supply Corporation | Forreston | 501(c)(12) | 2025 | $1.2 million | $819,536 | 2025-12 |
| Save Our Springs Alliance Inc | Austin | 501(c)(3) | 1993 | $1.2 million | $403,225 | 2024-12 |
| South Central Partnership for Energy Efficiency As A Resource | Buda | 501(c)(3) | 2013 | $1.1 million | $827,169 | 2025-12 |
| Metropolitan Partnership for Energy | San Antonio | 501(c)(3) | 2002 | $1.1 million | $782,234 | 2024-12 |
| Houston Wilderness Inc | Houston | 501(c)(3) | 2003 | $1.1 million | $1 million | 2025-06 |
| Texas Rice Industry Coalition for the Environment | Pierce | 501(c)(3) | 1995 | $1.1 million | $1.2 million | 2025-12 |
| A Rocha USA Inc | Austin | 501(c)(3) | 2001 | $1.1 million | $834,755 | 2025-06 |
| Keep Texas Beautiful Inc | Austin | 501(c)(3) | 1970 | $1.1 million | $1 million | 2025-08 |
| Carbon Tracker Initiative Inc | Austin | 501(c)(3) | 2018 | $1.1 million | $135,107 | 2024-12 |
| The Matagorda Bay Foundation | Brazoria | 501(c)(3) | 2013 | $1.1 million | $249,584 | 2024-12 |
| East Texas Arboretum and Botanical | Athens | 501(c)(3) | 1992 | $1.1 million | $2 million | 2024-12 |
| Turtle Creek Association Inc | Dallas | 501(c)(3) | 1988 | $1.1 million | $785,727 | 2025-12 |
| Texas Campaign for the Environment | Austin | 501(c)(4) | 1999 | $1.1 million | $660,447 | 2024-12 |
| The Nelac Institute | Weatherford | 501(c)(3) | 2003 | $1 million | $19,711 | 2025-09 |
| Travis Audubon Society Inc | Austin | 501(c)(3) | 1957 | $1 million | $11 million | 2025-06 |
| Commission Shift | Laredo | 501(c)(3) | 2021 | $986,178 | $1.3 million | 2024-12 |
| Bayou Land Conservancy | Spring | 501(c)(3) | 1998 | $974,909 | $4.4 million | 2025-12 |
| Amarillo Botanical Gardens | Amarillo | 501(c)(3) | 1957 | $967,874 | $5.7 million | 2025-08 |
| Native Plant Society of Texas | Fredericksbrg | 501(c)(3) | 1994 | $961,055 | $1.2 million | 2024-12 |
| New Economy of Working Houston | Houston | 501(c)(3) | 2023 | $955,379 | $1 million | 2024-12 |
| The Nature Discovery Center Inc | Bellaire | 501(c)(3) | 1981 | $942,410 | $3.4 million | 2025-09 |
| Westcave Outdoor Discovery Center | Round MTN | 501(c)(3) | 1976 | $931,323 | $1.8 million | 2025-06 |
| Equitable Origin Inc | Austin | 501(c)(3) | 2016 | $927,258 | $464,480 | 2025-12 |
| Partners for Education Agriculture and Sustainability | Austin | 501(c)(3) | 2015 | $906,012 | $322,813 | 2025-06 |
| Zilker Botanical Garden Conservancy Non-Profit Corporation | Austin | 501(c)(3) | 2015 | $900,019 | $626,133 | 2025-09 |
| River Oaks Garden Club | Houston | 501(c)(3) | 1962 | $899,674 | $2.6 million | 2025-05 |
| Fort Worth Garden Club Inc | Fort Worth | 501(c)(3) | 1982 | $892,222 | $1.1 million | 2026-05 |
| Texas Environmental Justice Advocacy Services | Houston | 501(c)(3) | 2006 | $877,638 | $3.3 million | 2025-12 |
| Produced Water Society Inc | Austin | 501(c)(3) | 2001 | $858,313 | $132,004 | 2025-12 |
| Garden Club of Houston | Houston | 501(c)(3) | 1982 | $839,305 | $1.1 million | 2025-05 |
| American Energy Institute | Austin | 501(c)(3) | 2015 | $834,662 | $400,645 | 2024-12 |
| Coalition for Environment Equity and Resilience | Houston | 501(c)(3) | 2024 | $807,750 | $842,311 | 2024-12 |
| Womens Council of the Dallas Arboretum & Botanical Garden | Dallas | 501(c)(3) | 1989 | $796,568 | $711,688 | 2025-05 |
| Gulf Energy Alliance Association | The Woodlands | 501(c)(6) | 2024 | $777,694 | $255,969 | 2024-12 |
| Austin Youth River Watch | Austin | 501(c)(3) | 1992 | $772,549 | $319,259 | 2025-06 |
| Streams & Valleys Inc | Fort Worth | 501(c)(3) | 1971 | $768,607 | $1.3 million | 2025-12 |
| National Association of Disability | Houston | 501(c)(6) | 2001 | $760,251 | $840,297 | 2025-12 |
| Lake South Water Supply Corporation | Conroe | 501(c)(12) | 2005 | $753,981 | $1.5 million | 2025-12 |
| Designer Diva Resale Inc | Houston | 501(c)(3) | 2022 | $744,007 | $847,330 | 2024-12 |
| Galen Foundation | San Antonio | 501(c)(3) | 2022 | $741,566 | $2.5 million | 2025-12 |
| Sibley Environmental Learning Center Foundation Inc | Midland | 501(c)(3) | 2005 | $738,274 | $1.1 million | 2024-12 |
| Guadalupe Blanco River Trust | Seguin | 501(c)(3) | 2002 | $729,066 | $4.9 million | 2025-08 |
| International Palm Society Inc | Austin | 501(c)(3) | 1957 | $729,027 | $1.5 million | 2025-12 |
| Friends of the Colorado River Foundation Inc | Austin | 501(c)(3) | 1992 | $725,169 | $665,028 | 2025-06 |
| Bayou City Waterkeeper Inc | Houston | 501(c)(3) | 2009 | $721,185 | $752,601 | 2024-12 |
| Trinity Edwards Springs Protection Association | Wimberley | 501(c)(3) | 2016 | $703,802 | $127,648 | 2025-12 |
| Building Conservation Trust | Houston | 501(c)(3) | 2013 | $696,157 | $4.1 million | 2024-12 |
| John Bunker Sands Wetland Center | Dallas | 501(c)(3) | 2010 | $692,090 | $2.5 million | 2025-12 |
| Bcarbon Inc | Houston | 501(c)(3) | 2021 | $673,504 | $816,515 | 2024-12 |
| Longview Arboretum and Nature Center | Longview | 501(c)(3) | 2015 | $670,705 | $4.2 million | 2024-12 |
| Rise and Shine Ministries Incorporated | Richardson | 501(c)(3) | 2014 | $648,747 | $339,590 | 2024-12 |
| Environmental Fund for Texas | Austin | 501(c)(3) | 1992 | $647,688 | $1.3 million | 2025-06 |
| Peckerwood Gardens Conservation Foundation Inc | Hempstead | 501(c)(3) | 1999 | $614,837 | $2.8 million | 2024-12 |
| Shoal Creek Conservancy | Austin | 501(c)(3) | 2014 | $607,812 | $1.1 million | 2025-09 |
| Greater Edwards Aquifer Alliance Inc | San Antonio | 501(c)(3) | 2005 | $605,707 | $1 million | 2025-12 |
| National Network of Abortion Funds | El Paso | 501(c)(3) | 1994 | $599,680 | $1.3 million | 2026-06 |
| Womens Council Garden of the Dallas Arboretum & Botanical Society Inc | Dallas | 501(c)(3) | 2019 | $587,783 | $4.7 million | 2025-05 |
| Central States Air Resource Agencies Association | Austin | 501(c)(3) | 1997 | $585,413 | $27,749 | 2025-09 |
| Texas Health and Environment Alliance Inc | Houston | 501(c)(3) | 2016 | $579,887 | $216,878 | 2025-12 |
| Consumer Energy Education Foundation | Houston | 501(c)(3) | 2010 | $577,690 | $78,710 | 2025-12 |
| Friends of the Fredericksburg Nature Center | Fredericksbrg | 501(c)(3) | 2013 | $577,612 | $904,856 | 2025-12 |
| Prop Owners Association of Cardiff Ranch | Dallas | 501(c)(4) | 2015 | $575,402 | $963,833 | 2025-12 |
| Bobwhite Brigade | New Braunfels | 501(c)(3) | 1997 | $564,543 | $939,568 | 2024-12 |
| Texas Property Assessed Clean Energy Authority | Austin | 501(c)(3) | 2015 | $546,519 | $436,590 | 2024-12 |
| Tejas Roadrunners Non-Profit Corporation | Huntsville | 501(c)(3) | 2023 | $529,766 | $58,080 | 2025-12 |
| North American Process Technology Alliance Napta | Deer Park | 501(c)(3) | 2000 | $522,292 | $776,988 | 2025-12 |
| Families in Nature | Austin | 501(c)(3) | 2014 | $508,479 | $168,785 | 2025-06 |
| Friends of Quinta Mazatlan | McAllen | 501(c)(3) | 2019 | $498,593 | $620,527 | 2024-12 |
| Brit Foundation | Fort Worth | 501(c)(3) | 2018 | $498,141 | $85 million | 2025-12 |
| Solid Waste Association of North America Inc | Grapevine | 501(c)(3) | 1986 | $491,881 | $397,958 | 2025-08 |
| Scenic Houston Inc | Houston | 501(c)(3) | 2021 | $489,666 | $766,502 | 2025-12 |
| Norchester Maintenance Fund Inc | Conroe | 501(c)(4) | 2003 | $486,253 | $597,803 | 2024-12 |
| Texas Land Trust Council | Wimberley | 501(c)(3) | 2003 | $486,242 | $1.2 million | 2025-12 |
| Efbc Conference Inc | The Woodlands | 501(c)(3) | 2025 | $483,900 | $401,093 | 2025-08 |
| Frontera Land Alliance | El Paso | 501(c)(3) | 2004 | $457,719 | $471,795 | 2025-12 |
| Energy Policy Network | College Sta | 501(c)(4) | 2015 | $457,073 | $163,931 | 2024-12 |
| Keep Midland Beautiful Inc | Midland | 501(c)(3) | 1983 | $444,268 | $526,467 | 2025-09 |
| Devils River Conservancy | Austin | 501(c)(3) | 2014 | $440,938 | $695,000 | 2024-12 |
| Blue Sky Maritime Coalition Inc | Houston | 501(c)(3) | 2022 | $440,840 | $288,373 | 2025-12 |
| Climate Advocates Voces Unidas | Universal Cty | 501(c)(3) | 2006 | $437,100 | $61,317 | 2025-06 |
| Southern Star Medical Research Institute | Missouri City | 501(c)(3) | 2013 | $433,791 | $1.5 million | 2025-12 |
| Lower Rio Grande Valley Nature Center | Weslaco | 501(c)(3) | 1985 | $425,949 | $257,258 | 2025-09 |
| Earthero | Richardson | 501(c)(3) | 2025 | $400,000 | $398,945 | 2025-12 |
| Forest North Community Improv Association | Houston | 501(c)(4) | 2025 | $399,308 | $444,878 | 2025-12 |
| South Texas Weather Modification Association | Pleasanton | 501(c)(3) | 1997 | $394,246 | $653,619 | 2025-12 |
| Downtown Austin Development Corporation | Austin | 501(c)(3) | 1998 | $392,207 | $617,946 | 2025-04 |
| Galveston Island Nature Tourism Council | Galveston | 501(c)(3) | 2004 | $390,390 | $316,596 | 2025-06 |
| Thirsty Ground International | Corp Christi | 501(c)(3) | 2015 | $383,443 | $15,492 | 2024-12 |
| Edwards Aquifer Conservancy | San Antonio | 501(c)(3) | 2015 | $382,807 | $24.3 million | 2024-12 |
| Will Erwin Headache Research Foundation | Houston | 501(c)(3) | 2014 | $382,577 | $104,867 | 2024-12 |
| Sam Houston Trails Coalition | Willis | 501(c)(3) | 2010 | $379,575 | $240,141 | 2025-12 |
| Preservation of South West Texas Wildlife | Rocksprings | 501(c)(3) | 2015 | $378,331 | $160,327 | 2024-12 |
| Downwinders at Risk Education Fund | Dallas | 501(c)(3) | 1996 | $364,978 | $271,218 | 2025-12 |
| Ecology Action of Texas Inc | Austin | 501(c)(3) | 1978 | $354,845 | $323,599 | 2024-12 |
| The Texas Environmental Health Association | Georgetown | 501(c)(3) | 1987 | $350,561 | $332,056 | 2025-12 |
| Marine Insurance Seminars Inc | Weatherford | 501(c)(3) | 2019 | $347,030 | $188,226 | 2024-12 |
| Renewable Energy for Better Life Foundation | Plano | 501(c)(3) | 2015 | $341,662 | $1.5 million | 2024-12 |
| Three Mountains Organization | El Paso | 501(c)(3) | 2025 | $340,672 | $336,211 | 2024-12 |
| Crowes Nest Farm Inc | Manor | 501(c)(3) | 1983 | $336,946 | $1.4 million | 2024-12 |
| Center for Environmental Accountability | Hurst | 501(c)(3) | 2022 | $331,885 | $110,068 | 2025-12 |
| Fruitful Commons | Austin | 501(c)(3) | 2020 | $329,111 | $199,335 | 2024-12 |
| M3 Ministries | Arlington | 501(c)(3) | 2024 | $327,389 | $698,971 | 2025-12 |
| Blair Water Supply Corporation | Merkel | 501(c)(12) | 2026 | $325,836 | $789,612 | 2025-12 |
| Friends of Texas Master Naturalist | Austin | 501(c)(3) | 2025 | $319,047 | $83,359 | 2025-12 |
| Texas Solar Energy Society Inc | Bastrop | 501(c)(3) | 1978 | $318,355 | $221,058 | 2024-12 |
| Rainforest Partnership | Austin | 501(c)(3) | 2008 | $311,938 | $37,997 | 2024-12 |
| Environmental Community Advocates of Galena Park | Galena Park | 501(c)(3) | 2021 | $307,494 | $151,552 | 2025-12 |
| Liveable Arlington | Arlington | 501(c)(3) | 2026 | $299,834 | $256,724 | 2022-12 |
| United Hunting Heritage International | Kerrville | 501(c)(3) | 2017 | $299,798 | $264,571 | 2025-12 |
| Bexar Branches Alliance Corp | San Antonio | 501(c)(3) | 2022 | $298,325 | $200,982 | 2024-12 |
| Planted Society | Pflugerville | 501(c)(3) | 2022 | $293,755 | $119,568 | 2025-12 |
| Bee the World Corp | Fulshear | 501(c)(3) | 2023 | $280,446 | $207,574 | 2024-12 |
| Shades of Green Legacy Foundation | San Antonio | 501(c)(3) | 2023 | $274,658 | $960,349 | 2025-12 |
| Friends of Bachman Lake | Dallas | 501(c)(3) | 2022 | $271,332 | $285,940 | 2025-12 |
| Keep Waco Beautiful Inc | Waco | 501(c)(3) | 1981 | $268,199 | $288,519 | 2025-09 |
| I-20 Wildlife Preserve & Jenna Welch Nature Study Center | Midland | 501(c)(3) | 2008 | $262,633 | $1.1 million | 2024-12 |
| Rob & Bessie Welder Wildlife Conservation Foundation | Sinton | 501(c)(3) | 2009 | $258,867 | $673,251 | 2024-12 |
| San Marcos River Foundation Inc | San Marcos | 501(c)(3) | 1987 | $255,228 | $4.2 million | 2025-12 |
| National Habitat Conservation Plan Coalition | New Braunfels | 501(c)(3) | 2022 | $252,610 | $247,875 | 2025-12 |
| Texas Foundation for Innovative Communities | Austin | 501(c)(3) | 2006 | $251,442 | $19,742 | 2024-12 |
| Great Plains Restoration Council | Fort Worth | 501(c)(3) | 1999 | $247,029 | $383,329 | 2024-12 |
| Raasin in the Sun | Austin | 501(c)(3) | 2018 | $246,547 | $227,164 | 2024-12 |
| Evergreen Austin | Austin | 501(c)(3) | 2024 | $246,530 | $232,666 | 2024-12 |
| Calhoun County Resource Watch | Seadrift | 501(c)(3) | 2011 | $246,295 | $217,196 | 2025-12 |
| Eastland Community Foundation | Eastland | 501(c)(3) | 2006 | $241,320 | $758,774 | 2024-12 |
| Community for Change | Austin | 501(c)(3) | 2015 | $238,214 | $220,679 | 2025-08 |
| Riverside Nature Center Association | Kerrville | 501(c)(3) | 1990 | $237,329 | $968,169 | 2024-12 |
| Alliance of Community Trainers | Austin | 501(c)(3) | 2005 | $233,311 | $150,328 | 2025-12 |
| Hall-Rialto Preservation Association | Beeville | 501(c)(3) | 1992 | $232,091 | $272,278 | 2024-12 |
| Champions Kids Camp Inc | Richmond | 501(c)(3) | 2003 | $228,558 | $51,262 | 2025-09 |
| El Paso Childrens Garden Inc | El Paso | 501(c)(3) | 2022 | $227,399 | $1.2 million | 2025-12 |
| Coastal Bend Bays Foundation Inc | Corpus Christi | 501(c)(3) | 1991 | $224,828 | $215,753 | 2025-12 |
| South Texas Coastal Initiative | San Antonio | 501(c)(3) | 2023 | $221,730 | $235,766 | 2025-12 |
| Bloomagain Houston | Houston | 501(c)(3) | 2023 | $219,705 | $11,910 | 2025-12 |
| Anidaso | Heath | 501(c)(3) | 2018 | $217,619 | $228,749 | 2024-12 |
| Houston Big Game Fishing Club Inc | Kemah | 501(c)(3) | 2008 | $214,733 | $584,460 | 2024-12 |
| Texas Hydrogen Alliance | Austin | 501(c)(6) | 2023 | $210,564 | $140,395 | 2025-12 |
| Cyber Future Foundation | Dallas | 501(c)(3) | 2014 | $206,708 | $173,586 | 2024-12 |
| Lantana Cares | Lantana | 501(c)(3) | 2021 | $204,183 | $82,383 | 2026-06 |
| Rio Bravo Restoration | Terlingua | 501(c)(3) | 2015 | $197,555 | $91,412 | 2024-12 |
| Big Bend Conservation Alliance | Alpine | 501(c)(3) | 2017 | $197,362 | $577,296 | 2024-12 |
| Texas Garden Clubs Inc | San Antonio | 501(c)(3) | 1993 | $190,229 | $260,458 | 2025-05 |
| Texas Geothermal Energy Alliance | Austin | 501(c)(6) | 2024 | $187,500 | $121,905 | 2024-12 |
| Darksky Texas | Austin | 501(c)(3) | 2023 | $187,016 | $237,609 | 2025-12 |
| Tunis Water Supply Corporation | Snook | 501(c)(12) | 2013 | $184,804 | $205,272 | 2024-12 |
| Founders Garden Club of Dallas | Dallas | 501(c)(3) | 2003 | $178,620 | $668,020 | 2025-06 |
| Greens Bayou Corridor Coalition | Houston | 501(c)(3) | 2007 | $178,177 | $729,655 | 2024-12 |
| Texas Hill Country Tree Foundation | Leander | 501(c)(3) | 2022 | $177,044 | $1.2 million | 2025-12 |
| Coastal Bend Air Quality Partnership | Corp Christi | 501(c)(3) | 2022 | $174,000 | $297,594 | 2024-12 |
| Conference of Latin American Geography Inc | College Sta | 501(c)(3) | 2014 | $168,566 | $230,263 | 2025-12 |
| Priority Impact Foundation | Arlington | 501(c)(3) | 2022 | $168,479 | $282,132 | 2025-01 |
| Adopt A Block DFW | Dallas | 501(c)(3) | 2023 | $167,750 | $23 | 2025-12 |
| Lone Star Coastal Alliance | Laguna Vista | 501(c)(3) | 2014 | $166,520 | $6,021 | 2025-12 |
| Galveston Island Tree Conservancy | Galveston | 501(c)(3) | 2011 | $157,541 | $166,644 | 2024-12 |
| Flatsworthy Inc | Fulton | 501(c)(3) | 2016 | $155,519 | $177,724 | 2025-12 |
| Houston Botanic Garden Endowment Fund | Houston | 501(c)(3) | 2024 | $154,834 | $150,049 | 2024-12 |
| Floranthropy | Tomball | 501(c)(3) | 2021 | $151,896 | $28,992 | 2024-12 |
| Get Real Alliance NP | Dallas | 501(c)(4) | 2022 | $150,272 | $7,088 | 2024-12 |
| Keep Rowlett Beautiful Inc | Rowlett | 501(c)(3) | 1999 | $149,450 | $228,546 | 2025-12 |
| Terra Advocati Inc | San Antonio | 501(c)(3) | 2015 | $148,767 | $46,743 | 2024-12 |
| Langtree-Duck Farm Eco Center | Raywood | 501(c)(3) | 2002 | $146,250 | $855,510 | 2024-12 |
| Texas Section Society for Range Management | San Angelo | 501(c)(3) | 1967 | $146,172 | $1.1 million | 2024-12 |
| Ruby Heart Foundation Inc | Guy | 501(c)(3) | 2022 | $141,600 | $141,886 | 2024-12 |
| Cleantx Foundation Inc | Austin | 501(c)(3) | 2009 | $141,259 | $24,097 | 2024-12 |
| Cullinan Park Conservancy | Sugar Land | 501(c)(3) | 2013 | $141,012 | $650,087 | 2024-12 |
| Save Texas Streams | Austin | 501(c)(3) | 1981 | $138,121 | $345,977 | 2024-09 |
| Texas Botanical Gardens and Native American Interpretive Center Inc | Goldthwaite | 501(c)(3) | 2004 | $136,207 | $1.5 million | 2024-12 |
| Keep Lewisville Beautiful | Lewisville | 501(c)(3) | 1996 | $134,626 | $254,476 | 2025-12 |
| Big Thicket Natural Heritage Trust | Kountze | 501(c)(3) | 2001 | $134,278 | $1 million | 2025-12 |
| Angelina Beautiful Clean | Lufkin | 501(c)(3) | 1987 | $133,599 | $131,261 | 2025-04 |
| Bisbees Fish & Wildlife Conservation Fund | Plano | 501(c)(3) | 2022 | $132,407 | $41,656 | 2024-12 |
| Dallas County Master Gardener Association Inc | Dallas | 501(c)(3) | 1997 | $132,073 | $487,653 | 2024-12 |
| Knowledge Point Network | Livingston | 501(c)(3) | 2020 | $131,088 | $120,976 | 2025-12 |
| Keep Sugar Land Beautiful | Sugar Land | 501(c)(3) | 2000 | $130,511 | $367,912 | 2025-12 |
| Comal County Conservation Alliance Inc | New Braunfels | 501(c)(3) | 2018 | $129,802 | $186,328 | 2024-12 |
| Biowell Inc | Houston | 501(c)(3) | 2023 | $128,211 | $6,456 | 2025-12 |
| Emission Reduction Credit Corporation of the Gulf Coast | Houston | 501(c)(3) | 1995 | $127,329 | $1.2 million | 2026-03 |
| Solar Austin | Austin | 501(c)(3) | 2016 | $126,618 | $84,639 | 2025-12 |
| Wichita Falls Streams and Valleys Inc | Wichita Falls | 501(c)(3) | 1985 | $126,249 | $149,618 | 2025-12 |
| Ohba - Organic Educators | Houston | 501(c)(3) | 2013 | $123,133 | $59,704 | 2024-12 |
| Bird Endowment | Houston | 501(c)(3) | 1998 | $117,628 | $24,343 | 2025-12 |
| Central Texas Mycological Society | Austin | 501(c)(3) | 2021 | $117,507 | $183,199 | 2025-12 |
| Keep Henderson Beautiful | Henderson | 501(c)(3) | 2019 | $117,342 | $206,821 | 2025-12 |
| Recycling Alliance of Texas | Austin | 501(c)(3) | 1990 | $113,413 | $95,173 | 2025-06 |
| Denton County Master Gardener Associatation | Denton | 501(c)(3) | 2004 | $110,030 | $128,891 | 2025-12 |
| Eco Kids Club Inc | San Antonio | 501(c)(3) | 2023 | $108,743 | $38,683 | 2025-12 |
| Fort Bend Green | Houston | 501(c)(3) | 2009 | $107,522 | $374,124 | 2025-10 |
| Magnolia Garden Club | Beaumont | 501(c)(3) | 2011 | $106,612 | $136,512 | 2025-06 |
| Texas Conservation Association for Water and Soil | Austin | 501(c)(4) | 2014 | $104,000 | $105,692 | 2025-12 |
| With Heart | Houston | 501(c)(3) | 2024 | $102,161 | $53,570 | 2023-12 |
| 3D Nature Technologies Inc | San Marcos | 501(c)(3) | 2022 | $102,137 | $175,908 | 2025-12 |
| Grand Harbor Canal Association | Austin | 501(c)(4) | 2025 | $101,553 | $28,904 | 2025-12 |
| Keep Brazos Beautiful Inc | Bryan | 501(c)(3) | 1981 | $101,450 | $117,671 | 2025-09 |
| Friends of CTWC | Spicewood | 501(c)(3) | 2013 | $101,310 | $149,900 | 2025-12 |
| Friends of Hondo Canyon | Tarpley | 501(c)(3) | 2019 | $101,031 | $46,242 | 2025-12 |
| Green Careers Dallas | Dallas | 501(c)(3) | 2016 | $100,865 | $4,285 | 2024-12 |
| Eaton Hill Nature Center & Preserve | Sonora | 501(c)(3) | 2020 | $99,082 | $78,801 | 2025-09 |
| Environmental Stewardship | Bastrop | 501(c)(3) | 2008 | $98,741 | $106,383 | 2025-12 |
| Climate Conversation Brazoria County | Angleton | 501(c)(3) | 2024 | $96,713 | $74,344 | 2024-12 |
| Future Energies Foundation | Pearland | 501(c)(3) | 2023 | $94,500 | $24,700 | 2024-12 |
| Permian Basin Coalition of Land and Royalty Owners and Operators | Midland | 501(c)(4) | 2023 | $93,598 | $99,666 | 2025-12 |
| Bexar County Master Gardeners | San Antonio | 501(c)(3) | 1991 | $93,399 | $442,425 | 2025-12 |
| Texas Water Utilities Association | Beaumont | 501(c)(3) | 1995 | $92,775 | $177,361 | 2025-12 |
| Camp Ota Inc | Alvin | 501(c)(3) | 2024 | $92,655 | $1 | 2025-12 |
| Healthcode | Austin | 501(c)(3) | 2010 | $92,501 | $35,445 | 2025-12 |
| River Aid San Antonio | San Antonio | 501(c)(3) | 2022 | $91,821 | $31,238 | 2024-06 |
| Scenic Galveston Incorporated | Houston | 501(c)(3) | 1997 | $91,190 | $3.9 million | 2024-12 |
| Artable Curiosities | Seguin | 501(c)(3) | 2022 | $90,890 | $19,290 | 2025-12 |
| Friends of Balcones Canyonlands National Wildlife Refuge | Lago Vista | 501(c)(3) | 2002 | $90,181 | $400,340 | 2025-12 |
| Texas Conservation Fund | Houston | 501(c)(3) | 1991 | $87,690 | $73,571 | 2024-12 |
| Gardening Volunteers of South Texas | San Antonio | 501(c)(3) | 2003 | $87,684 | $216,613 | 2025-12 |
| Bexar Audubon Society | San Antonio | 501(c)(3) | 1984 | $84,328 | $220,560 | 2025-06 |
| Texas Vegetation Management Association Educational Foundation | La Grange | 501(c)(3) | 2012 | $83,645 | $129,277 | 2024-12 |
| Friends of Enchanted Rock State Natural Area Inc | Helotes | 501(c)(3) | 2000 | $83,214 | $293,446 | 2025-12 |
| Coastal Prairie Chaptr of the Texas Master Naturalists Incorporated | Rosenberg | 501(c)(3) | 2011 | $82,535 | $47,209 | 2025-12 |
| Better Parks for Galveston | Galveston | 501(c)(3) | 2014 | $82,062 | $193,010 | 2024-12 |
| Caprock Partners Foundation | Quitaque | 501(c)(3) | 1999 | $81,492 | $268,389 | 2025-12 |
| Bandera Canyonlands Alliance | Vanderpool | 501(c)(3) | 2009 | $81,378 | $64,707 | 2025-12 |
| Independence Gardens | Lewisville | 501(c)(3) | 2014 | $80,242 | $46,489 | 2025-12 |
| Community Garden Initiative of Central Texas | Austin | 501(c)(3) | 2009 | $76,724 | $176,247 | 2025-12 |
| Frankford Preservation Foundation | Dallas | 501(c)(3) | 2014 | $74,644 | $1.5 million | 2024-12 |
| Global Effects Incorporated | Fort Worth | 501(c)(3) | 2014 | $74,464 | $97,771 | 2025-12 |
| Citizens Environmental Coalition Educational Fund | Houston | 501(c)(3) | 1971 | $72,476 | $44,499 | 2024-12 |
| Austin Outside | Austin | 501(c)(3) | 2020 | $72,073 | $73,490 | 2025-12 |
| Friends of the River San Bernard | Brazoria | 501(c)(3) | 2006 | $69,418 | $430,498 | 2025-12 |
| Armand Bayou Nature Center Foundation | Pasadena | 501(c)(3) | $69,272 | $2.2 million | 2025-12 | |
| Clinic Access Support Network | Houston | 501(c)(3) | 1994 | $67,649 | $2.3 million | 2025-06 |
| Allies in Energy | Houston | 501(c)(3) | 2025 | $67,380 | $38,609 | 2025-12 |
| Port Aransas Garden Club | Port Aransas | 501(c)(3) | 2010 | $65,892 | $165,995 | 2025-05 |
| Victoria County Master Gardener Association | Victoria | 501(c)(3) | 2001 | $65,382 | $157,934 | 2025-12 |
| Preserve Our Hill Country Environment Foundation | New Braunfels | 501(c)(3) | 2020 | $64,537 | $279,780 | 2025-12 |
| Keystone Heritage Park Inc | El Paso | 501(c)(3) | 2000 | $64,521 | $1.1 million | 2024-12 |
| Frontera Audubon Society | Weslaco | 501(c)(3) | 1978 | $64,313 | $393,070 | 2025-05 |
| Matagorda County Nature Center Inc | Bay City | 501(c)(3) | 1997 | $64,115 | $217,436 | 2025-12 |
| Keep Athens Beautiful | Athens | 501(c)(3) | 1998 | $64,017 | $22,980 | 2025-12 |
| Lake McQueeney Property Owners Association Inc | MC Queeney | 501(c)(3) | 1996 | $63,927 | $49,811 | 2025-07 |
| American Easement Foundation Inc | Galveston | 501(c)(3) | 2023 | $62,683 | $1.3 million | 2025-12 |
| Green Hand Garden Club | San Antonio | 501(c)(7) | 2016 | $62,263 | $80,728 | 2026-06 |
| Polk County Recycling and Beautification | Livingston | 501(c)(3) | 2022 | $61,345 | $95,521 | 2024-12 |
| HSB Park Inc | Horseshoe Bay | 501(c)(3) | 2020 | $60,737 | $620,990 | 2025-12 |
| Moss Haven Farm | Dallas | 501(c)(3) | 2014 | $59,054 | $45,121 | 2023-12 |
| Fort Bend County Master Gardeners Inc | Rosenberg | 501(c)(3) | 2002 | $58,729 | $107,294 | 2024-12 |
| Keep Irving Beautiful | Irving | 501(c)(3) | 1995 | $57,630 | $74,119 | 2025-09 |
| White Rock East Garden Tour and Artisans | Dallas | 501(c)(3) | 2018 | $56,112 | $4,918 | 2025-06 |
| Protect the Paluxy Valley Inc | Glen Rose | 501(c)(3) | 2026 | $55,311 | $50,380 | 2025-12 |
| Harris County Master Gardener Association Inc | Houston | 501(c)(3) | 2007 | $54,907 | $143,548 | 2025-12 |
| Rockwall County Master Gardener Association Inc | Rockwall | 501(c)(3) | 2005 | $52,823 | $58,376 | 2025-12 |
| Pines and Prairies Land Trust | Bastrop | 501(c)(3) | 2001 | $52,716 | $3.6 million | 2023-12 |
| Quail Valley Garden Club Inc | Missouri City | 501(c)(3) | 2015 | $51,450 | $64,320 | 2025-05 |
| Chautauqua Foundation Inc | Austin | 501(c)(3) | 1995 | $51,340 | $91,391 | 2025-12 |
| Keep Wimberley Beautiful Inc | Wimberley | 501(c)(3) | 1993 | $50,971 | $113,688 | 2026-04 |
| Justice and Mercy Services Inc | Robinson | 501(c)(3) | 2019 | $50,372 | $23,562 | 2024-12 |
| Watson Rare Native Plant Preserve | Warren | 501(c)(3) | 2009 | $50,074 | $170,258 | 2025-12 |
| Friends of Hutto Dog Park | Hutto | 501(c)(3) | 2020 | $50,007 | $353,534 | 2024-12 |
| Southeast Section of the Water Environment Association of Texas | Houston | 501(c)(3) | 2025 | $49,596 | $55,847 | 2025-12 |
| Mitigation Futures Conservancy | McKinney | 501(c)(3) | 2014 | $49,367 | $624,253 | 2025-12 |
| Friends of the Arboretum | Quitman | 501(c)(3) | 2012 | $45,957 | $78,378 | 2025-09 |
| Conservative Texans for Energy Innovation | Austin | 501(c)(4) | 2024 | $45,000 | $77,162 | 2024-12 |
| Texas Garden Clubs Inc | Friendswood | 501(c)(3) | 1993 | $44,846 | $313,853 | 2026-05 |
| Brazoria County Master Gardener Association | Angleton | 501(c)(3) | 2001 | $43,650 | $128,311 | 2025-12 |
| San Marcos Greenbelt Alliance | San Marcos | 501(c)(3) | 2000 | $43,465 | $150,294 | 2025-12 |
| Herb Society of America Pioneer Unit | Round Top | 501(c)(3) | 1996 | $42,167 | $121,263 | 2025-06 |
| Krushan Foundation | Wimberley | 501(c)(3) | 2022 | $40,516 | $20,023 | 2025-12 |
| Tropical Maniacs of Matagorda | Matagorda | 501(c)(3) | 2019 | $40,148 | $163,264 | 2025-12 |
| Lake Dixie Inc | Carthage | 501(c)(3) | 2024 | $39,250 | $764,038 | 2025-12 |
| Grapevine Garden Club | Grapevine | 501(c)(3) | 2024 | $38,443 | $84,949 | 2026-05 |
| Connemara Conservancy Foundation | Allen | 501(c)(3) | 1982 | $37,963 | $1.3 million | 2025-06 |
| Camp Tonkawa Outdoor Learning Center | Collinsville | 501(c)(3) | 2010 | $35,276 | $2,027 | 2025-12 |
| Texas Conservation Science Inc | Austin | 501(c)(3) | 1994 | $34,565 | $6,540 | 2024-12 |
| South Texas Water Utility Managers Association | Edinburg | 501(c)(6) | 2004 | $34,365 | $48,773 | 2025-12 |
| Orange County Lepc | Orange | 501(c)(3) | 2025 | $34,300 | $46,747 | 2025-12 |
| Friends of Blue Hole | Wimberley | 501(c)(3) | 2006 | $32,631 | $279,943 | 2025-12 |
| Keep Greenville Beautful | Greenville | 501(c)(3) | 2014 | $31,163 | $2,920 | 2025-09 |
| Audubon Foundation of Texas | Austin | 501(c)(3) | 1989 | $30,399 | $16,821 | 2025-05 |
| Ellis County Master Gardeners Inc | Waxahachie | 501(c)(3) | 2000 | $30,237 | $81,432 | 2025-06 |
| Sabine Basin Wildlife Foundation | Kilgore | 501(c)(3) | 2021 | $27,715 | $40,312 | 2025-12 |
| Alamo Resource Conservation & Development Area Inc | Boerne | 501(c)(3) | 1993 | $27,705 | $49,360 | 2025-12 |
| Citizens for Responsible County Development Inc | Palmer | 501(c)(3) | 2025 | $27,163 | $3,032 | 2025-12 |
| Keep Odessa Beautiful | Odessa | 501(c)(3) | 1989 | $24,954 | $209,700 | 2025-09 |
| Old-Forest | N Richlnd HLS | 501(c)(3) | 2022 | $24,735 | $10,324 | 2025-12 |
| Bell County Master Gardeners Association Inc | Belton | 501(c)(3) | 1999 | $24,561 | $28,292 | 2025-12 |
| Gardeners in Community Development | Richardson | 501(c)(3) | 1994 | $24,512 | $866,497 | 2025-06 |
| Latour Property Owners Association Inc | Frisco | 501(c)(4) | 2014 | $23,992 | $20,540 | 2025-12 |
| Friends of the Colorado River Endowment | Austin | 501(c)(3) | 2000 | $20,653 | $417,717 | 2025-06 |
| Valley Land Fund Inc | McAllen | 501(c)(3) | 1988 | $20,582 | $4.5 million | 2025-09 |
| Pineywoods Resource Conservation & Development Corporation | Nacogdoches | 501(c)(3) | 1992 | $17,830 | $17,667 | 2025-12 |
| Citizens Against Ellis County Muds Inc | Ennis | 501(c)(3) | 2023 | $17,375 | $2,239 | 2025-12 |
| Veterans Memorial Park of Weimar | Weimar | 501(c)(3) | 2016 | $16,662 | $218,300 | 2025-12 |
| Clean Galveston Inc | Galveston | 501(c)(3) | 1983 | $16,104 | $60,226 | 2025-12 |
| Ladye Lovell Original | Harlingen | 501(c)(3) | 2017 | $16,063 | $6,862 | 2025-12 |
| Texas Association of Resource Conservation & Development Areas | Victoria | 501(c)(3) | 1995 | $14,587 | $495,404 | 2024-12 |
| Friends of Sea Rim | Sabine Pass | 501(c)(3) | 2026 | $14,077 | $30,401 | 2025-12 |
| Greenbelt Alliance of Denton County | Dallas | 501(c)(3) | 2013 | $13,135 | $69,052 | 2025-09 |
| Texas Coastal Exchange | Houston | 501(c)(3) | 2019 | $12,460 | $39,965 | 2025-12 |
| Weatherford Noon Lions Foundation | Weatherford | 501(c)(3) | 2022 | $10,750 | $30,951 | 2025-12 |
| Texas Watershed Management Foundation | Gatesville | 501(c)(3) | 2003 | $9,725 | $17,605 | 2025-08 |
| Monte Mucho Audubon Society | Laredo | 501(c)(3) | 2026 | $9,325 | $23,060 | 2024-10 |
| Memorial Park Conservancy Endowment | Houston | 501(c)(3) | 2012 | $9,155 | $428,360 | 2025-05 |
| Travis County Master Gardners Association Inc | Austin | 501(c)(3) | 1995 | $8,861 | $89,020 | 2025-12 |
| Keep Aransas County Beautiful | Fulton | 501(c)(3) | 2016 | $6,770 | $40,467 | 2025-12 |
| Lower Rio Grande Valley Tpdes Storm | Elsa | 501(c)(3) | 2024 | $6,144 | $15,682 | 2023-12 |
| CMS Renewable Energy | Forestburg | 501(c)(3) | 2024 | $5,876 | $2.4 million | 2025-12 |
| Husbandry Inc | Austin | 501(c)(3) | 2024 | $5,042 | $87 | 2025-12 |
| Keep Temple Beautiful Inc | Temple | 501(c)(3) | 1990 | $4,853 | $40,827 | 2025-12 |
| Friends of the Trinity Strand Trail | Dallas | 501(c)(3) | 2025 | $4,471 | $24,059 | 2025-07 |
| Keep Smithville Beautiful | Smithville | 501(c)(3) | 2021 | $3,548 | $10,294 | 2025-12 |
| The Climate Change Now Initiative | Austin | 501(c)(3) | 2014 | $3,486 | $19,537 | 2025-12 |
| Commission Shift Action | Laredo | 501(c)(4) | 2023 | $3,481 | $72,026 | 2024-12 |
| Rioraiz Inc | Houston | 501(c)(3) | 2022 | $3,400 | $8,828 | 2025-12 |
| Terra Green Project Inc | McKinney | 501(c)(3) | 2023 | $3,362 | $1,643 | 2024-12 |
| Trinity-Blacklands Urban Forestry Council | Dallas | 501(c)(3) | 2020 | $3,021 | $17,900 | 2024-12 |
| Sasquatch Off Road Adventure Club | Nacogdoches | 501(c)(3) | 2021 | $1,123 | $938 | 2025-12 |
| Save Buffalo Bayou | Houston | 501(c)(3) | 2015 | $759 | $8,693 | 2025-12 |
| One More Green Space | Dallas | 501(c)(3) | 2021 | $715 | $123 | 2025-12 |
| South Texas Reclamation Project | Waller | 501(c)(3) | 2025 | $700 | $1 | 2025-12 |
| Windmill Hill Improvement Fund Inc | Waco | 501(c)(3) | 2025 | $683 | $183 | 2025-12 |
| Saytrees Foundation | Frisco | 501(c)(3) | 2022 | $500 | $3,414 | 2025-12 |
| Community Investment Corporation | Austin | 501(c)(3) | 2001 | $250 | $1 | 2025-12 |
| Nature Foundation | Austin | 501(c)(3) | 2023 | $24 | $1,070 | 2025-12 |
| Keep El Paso Beautiful | El Paso | 501(c)(3) | 1984 | $5 | $12,898 | 2024-12 |
| 2222 Coalition of Neighborhoodassociations Inc | Austin | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| 3 Res | Plano | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| 4 A Purpose Inc | Fort Worth | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| 4 R Planet | Oak Point | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| 9livesrecycling | Fresno | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| A Plant in Every Home | Houston | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| A Special Blend Gardening and Farm Community | Dallas | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Abilene Clean and Proud Inc | Abilene | 501(c)(3) | 1987 | $0 | $0 | 2025-09 |
| Academy for Global Environmental Sustainability Inc | Houston | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Adam Tree Foundation | San Antonio | 501(c)(3) | 2024 | |||
| Adams Park Foundation | Volente | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Adopt-A-Spot Inc | San Angelo | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Adventurers Respite | Wichita Falls | 501(c)(3) | 2025 | |||
| Adventures Countering Litter | Allen | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| African Blackwood Conservation Project | Red Rock | 501(c)(3) | 1999 | $0 | $0 | 2026-06 |
| African Solar Electric Light Foundation | Arlington | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Ag Science Conservation Association | Humble | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Agroecology Institute | Corp Christi | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Air & Waste Management Association Gulf Coast Chapter | Houston | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Al and Lula Mae Slaughter Park Foundation | Roanoke | 501(c)(3) | 2010 | $500,830 | 2025-12 | |
| Alamo Area Chapter of the Texas Master Naturalist Inc | San Antonio | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Alamo Orchid Society Inc | San Antonio | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Alford Cemetery Association Inc | Austin | 501(c)(13) | 2014 | $0 | $0 | 2025-12 |
| Alliance for Conservation Easements | Houston | 501(c)(3) | 2014 | $0 | $0 | 2023-12 |
| Amarillo Tomorrow Inc | Amarillo | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Amazon Rescue and Conservation Alli Ance | Silsbee | 501(c)(3) | 2026 | |||
| American Climate Club | Rio Hondo | 501(c)(4) | 2023 | $0 | $0 | 2025-12 |
| American Home & Garden Round Table | San Antonio | 501(c)(3) | 2020 | $0 | $0 | 2026-06 |
| American Iris Society | Chillicothe | 501(c)(3) | 2001 | $0 | $0 | 2025-09 |
| American Land Association | McKinney | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| American Rose Society | Houston | 501(c)(3) | 1983 | $0 | $0 | 2025-12 |
| American Yaupon Association | Austin | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Angelina County Master Gardners | Lufkin | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Aquaivia | Houston | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Aquatic Gardeners Association Inc | Denton | 501(c)(4) | 2005 | $0 | $0 | 2025-12 |
| Aquifer Conservation Alliance | Liberty Hill | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| Aransas County Community Garden | Fulton | 501(c)(3) | 2011 | $0 | $0 | 2024-12 |
| Aransas First | Rockport | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Arlington Conservation Council | Arlington | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Arlington Organic Garden Club | Arlington | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Arroyo Colorado Conservancy | La Feria | 501(c)(3) | 2014 | $0 | $0 | 2024-08 |
| Aura Rainwater Foundation | Round Rock | 501(c)(3) | 2026 | |||
| Austin Area Garden Center Inc | Austin | 501(c)(3) | 1962 | $0 | $0 | 2025-09 |
| Austin Butterfly Forum Incorporated | Austin | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Austin Earth Day | Austin | 501(c)(3) | 2023 | $1 | 2025-12 | |
| Austin Herb Society Inc | Austin | 501(c)(3) | 1999 | $0 | $0 | 2026-05 |
| Austin Ridge Riders Club | Austin | 501(c)(3) | 1998 | $0 | $0 | 2025-12 |
| Austin Waterway Guardians | Round Rock | 501(c)(3) | 2025 | |||
| Avae | Houston | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Back To the Earth Nature Initiative Inc | Montgomery | 501(c)(3) | 2026 | |||
| Baffin Bay Coastal Cast Off | Riviera | 501(c)(3) | 2025 | |||
| Balcones Canyonlands Chapter - Texas Master Naturalist Program | Austin | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Bandera Wranglers | Bandera | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Bastrop County Audubon Society | Bastrop | 501(c)(3) | 1992 | $0 | $0 | 2025-06 |
| Bay Area Coastal Protection Alliance | Houston | 501(c)(3) | 2014 | $0 | $8,436 | 2024-12 |
| Bayou Barrels Foundation | Houston | 501(c)(3) | 2026 | |||
| Bayou City Initiative | Houston | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Bayou District Incorporated | Houston | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Be the Spark Inc | Houston | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Bear Springs Blossom Nature Conservation Group Inc | Pipe Creek | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| Beau Theriot Comanche Canyon Ranch Preserve Inc | Austin | 501(c)(3) | 2005 | $8.5 million | 2024-12 | |
| Beaumont Botanical Gardens Inc | Beaumont | 501(c)(3) | 2022 | $329,765 | 2024-12 | |
| Beautification Committee of Boca Chica | Palacios | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Beautify Beaumont Inc | Beaumont | 501(c)(3) | 1988 | $0 | $0 | 2025-12 |
| Beautify El Campo Extension Inc | El Campo | 501(c)(3) | 1997 | $0 | $0 | 2026-03 |
| Becker Green Classroom | Austin | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Bee County Wildlife Coop | Beeville | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Bee Harmony | Pinehurst | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Ben & Annies Trees for Tomorrow | Shavano Park | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Benevolent Resources Inc | Katy | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Bethel Trinitarian Assembly | Mansfield | 501(c)(3) | 2026 | |||
| Bexar Blooms Inc | San Antonio | 501(c)(3) | 2026 | |||
| Bexar Grotto | San Antonio | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Big Bend Citizens Alliance | Terlingua | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Big Bend Protection Alliance | Fort Worth | 501(c)(3) | 2026 | |||
| Big Country Chapter Texas Master Naturalist | Abilene | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Big Country Iris Society | Abilene | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Big County Chapter of Texas Association of Appraisal Districts | Abilene | 501(c)(6) | 2014 | $0 | $0 | 2025-12 |
| Big Thicket Biosphere Reserve | Lumberton | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Biodiversity Is Life Foundation Inc | Dallas | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Biodiversity Works | Austin | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Birding Interest Group at Utmb | Galveston | 501(c)(3) | 2025 | |||
| Blackwell Community Improvement Association | Blackwell | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Blackwood Educational Land Institute | Houston | 501(c)(3) | 2000 | $233,971 | 2024-12 | |
| Blanco County Conservation Initiative | Johnson City | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Blanco County Friends of the Night Sky | Johnson City | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Bloom Where Ur Planted Inc | Sachse | 501(c)(3) | 2024 | |||
| Bloombomb Corporation | Kingwood | 501(c)(3) | 2024 | |||
| Blooming Sapling | Katy | 501(c)(3) | 2024 | |||
| Blue Duck Foundation | McKinney | 501(c)(3) | 2026 | |||
| Blue Shallows | Dickinson | 501(c)(3) | 2026 | |||
| Bluestem Chapter Texas Master Naturalists | Sherman | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Bmtrees | Beaumont | 501(c)(3) | 2026 | |||
| Board Reward | Canyon Lake | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Boerne Garden Club | Boerne | 501(c)(4) | 2005 | $0 | $0 | 2025-12 |
| Bois D Arc Chapter Texas Master Nat Uralist Program | Ivanhoe | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Border Information & Solutions Network | Brownsville | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Bpu Energy Storage Resource | Carrollton | 501(c)(3) | 2026 | |||
| Braeswood Place Community Garden | Houston | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Braswell Foundation Inc | New Boston | 501(c)(3) | 2020 | $1 | 2024-12 | |
| Braswell Golf Booster Club | Aubrey | 501(c)(3) | 2019 | $0 | $0 | 2023-12 |
| Brazos County Master Gardeners | Bryan | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| Brazos Valley Chapter of Safari Club International | College Sta | 501(c)(4) | 2025 | $0 | $0 | 2025-12 |
| Brazos Watershed Alliance Inc | Granbury | 501(c)(3) | 2026 | |||
| Bridgestone Greenways Conservancy Inc | Spring | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Brownwood Beautification Commission Inc | Brownwood | 501(c)(3) | 1987 | $0 | $0 | 2023-12 |
| Brush Y Canyons Chapter of Texas Master Naturalist | Concan | 501(c)(3) | 2024 | $0 | $0 | 2026-03 |
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.