Data / Nonprofits / Maryland / Animal-related
Animal-related nonprofits in Maryland: 690 registered with the IRS
690 animal-related nonprofits are registered with the IRS in Maryland, 672 of them 501(c)(3) charities; the 267 that report revenue took in $319.1 million. The most are in Baltimore (46), Frederick (21), Silver Spring (18). The largest by revenue: National Aquarium Inc ($54.4 million), The Maryland Zoological Society Inc ($25 million), Alley Cat Allies Incorporated ($22.3 million).
SpecStream is the live web data engine for teams and agents. It reads the IRS register of exempt organizations as the IRS updates it, and this page is that reading. Ask for the nonprofits you need by place, cause and size, with their latest Form 990 figures and websites, and they arrive in your sheet, CRM, Slack or agent.
The 500 largest by revenue
| Organization | City | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| National Aquarium Inc | Baltimore | 501(c)(3) | 1979 | $54.4 million | $92.1 million | 2025-12 |
| The Maryland Zoological Society Inc | Baltimore | 501(c)(3) | 1974 | $25 million | $81.6 million | 2025-06 |
| Alley Cat Allies Incorporated | Bethesda | 501(c)(3) | 1992 | $22.3 million | $39.7 million | 2025-07 |
| The Humane League | Rockville | 501(c)(3) | 2006 | $22.1 million | $27 million | 2025-12 |
| American Association of Zoological Parks and Aquariums Inc | Silver Spring | 501(c)(3) | 1972 | $20.9 million | $35.2 million | 2024-12 |
| Gentle Giants Draft Horse Rescue Society LTD | Mount Airy | 501(c)(3) | 2007 | $11.7 million | $16.1 million | 2025-12 |
| Aaalac International Inc | Frederick | 501(c)(3) | 1966 | $9.7 million | $19.2 million | 2025-12 |
| Born Free USA United With Animal Protection Institute | Silver Spring | 501(c)(3) | 1968 | $8.3 million | $7.7 million | 2025-12 |
| Maryland Spca Inc | Baltimore | 501(c)(3) | 1939 | $8.2 million | $42.5 million | 2025-12 |
| Baltimore Animal Rescue and Care Shelter Inc | Brooklyn | 501(c)(3) | 2005 | $8 million | $6.6 million | 2025-06 |
| Last Chance Animal Rescue Inc | White Plains | 501(c)(3) | 2001 | $6.7 million | $9.9 million | 2025-12 |
| American Fisheries Society Inc | Bethesda | 501(c)(3) | 1972 | $6.1 million | $7 million | 2024-12 |
| Humane Society of Washington County Incorporated | Hagerstown | 501(c)(3) | 1970 | $3.7 million | $11.2 million | 2025-06 |
| Montgomery County Humane Society Inc | Rockville | 501(c)(3) | 1974 | $3.6 million | $14.2 million | 2025-06 |
| Days End Farm Horse Rescue Inc | Woodbine | 501(c)(3) | 1992 | $3.5 million | $7.6 million | 2025-06 |
| Wildlife Habitat Council Inc | Bethesda | 501(c)(3) | 1988 | $3.5 million | $2.2 million | 2024-12 |
| Alley Cat Rescue Inc | Mt Rainier | 501(c)(3) | 2001 | $3.3 million | $3.1 million | 2025-07 |
| The Wildlife Society | Bethesda | 501(c)(3) | 1969 | $3.2 million | $6 million | 2025-06 |
| Humane Society of Baltimore County Inc | Reisterstown | 501(c)(3) | 1942 | $3.2 million | $12.6 million | 2025-06 |
| Ferry Cove Shellfish Inc | Sherwood | 501(c)(3) | 2020 | $3 million | $111,829 | 2025-12 |
| Center for A Humane Economy Inc | Bethesda | 501(c)(3) | 2019 | $2.9 million | $3.6 million | 2025-10 |
| Defenders of Animal Rights Inc | Phoenix | 501(c)(3) | 1976 | $2.9 million | $15.7 million | 2025-12 |
| Hart for Animals Inc | McHenry | 501(c)(3) | 2003 | $2.9 million | $3.4 million | 2025-12 |
| Global Wildlife Trust Inc | Thurmont | 501(c)(3) | 2019 | $2.8 million | $2.4 million | 2025-10 |
| National Aquarium Foundation Inc | Baltimore | 501(c)(3) | 1983 | $2.7 million | $36.5 million | 2025-12 |
| Humane Society of Harford County Inc | Fallston | 501(c)(3) | 1949 | $2.7 million | $7.3 million | 2025-06 |
| Society for the Prevention of Cruelty To Animals of A A Co MD in | Annapolis | 501(c)(3) | 1951 | $2.6 million | $18 million | 2025-12 |
| Animal Outlook Inc | Takoma Park | 501(c)(3) | 1998 | $2.3 million | $2.7 million | 2025-12 |
| Waterfowl Festival Inc | Easton | 501(c)(3) | 1975 | $2.2 million | $5.3 million | 2025-06 |
| Humane Society of Carroll Co Inc | Westminster | 501(c)(3) | 1958 | $2 million | $4.4 million | 2025-06 |
| Maryland Horse Breeders Association Inc | Reisterstown | 501(c)(6) | 2004 | $2 million | $3.2 million | 2026-03 |
| Plumpton Park Zoological Gardens Inc | Rising Sun | 501(c)(3) | 1988 | $1.9 million | $1.3 million | 2025-06 |
| Humane Society of Wicomico County Inc | Salisbury | 501(c)(3) | 1969 | $1.8 million | $4 million | 2026-06 |
| Talbot Humane Co | Easton | 501(c)(3) | 1952 | $1.7 million | $6.6 million | 2025-06 |
| Animals Angels Incorporated | Westminster | 501(c)(3) | 2007 | $1.6 million | $2.3 million | 2025-12 |
| Rude Ranch Animal Rescue Inc | Millersville | 501(c)(3) | 2001 | $1.4 million | $2.1 million | 2024-12 |
| Humane Society of Kent County Incorporated | Chestertown | 501(c)(3) | 1962 | $1.4 million | $5.8 million | 2025-06 |
| Foxie G Foundation Inc | Union Bridge | 501(c)(3) | 2012 | $1.3 million | $2 million | 2025-12 |
| Patuxent Animal Welfare Society | Huntingtown | 501(c)(3) | 1996 | $1.3 million | $1.2 million | 2025-12 |
| Companions and Animals for Reform and Equity Inc | Baltimore | 501(c)(3) | 2020 | $1.1 million | $4.5 million | 2024-12 |
| Second Chance Wildlife Center Inc | Clarksburg | 501(c)(3) | 1995 | $1.1 million | $8.3 million | 2025-12 |
| Allegany County Animal Shelter Management Foundation | Cumberland | 501(c)(3) | 2002 | $1.1 million | $971,273 | 2025-06 |
| Worcester County Humane Society Incorporated | Berlin | 501(c)(3) | 1978 | $1 million | $3.2 million | 2025-07 |
| Lab Rescue of LRCP Incorporated | Lutherville | 501(c)(3) | 1994 | $988,078 | $353,915 | 2024-12 |
| Wildfowl Trust of North America Inc | Grasonville | 501(c)(3) | 1980 | $961,257 | $3.7 million | 2025-12 |
| Poplar Spring Animal Sanctuary Inc | Poolesville | 501(c)(3) | 1996 | $951,868 | $3.4 million | 2024-12 |
| Humane Society of Charles County Inc | Waldorf | 501(c)(3) | 1981 | $910,409 | $479,861 | 2025-12 |
| Centre for Wildlife Studies Inc | Bethesda | 501(c)(3) | 2020 | $837,043 | $1.2 million | 2024-12 |
| Small Miracles Cat and Dog Rescue Inc | Ellicott City | 501(c)(3) | 2007 | $828,252 | $1.4 million | 2025-02 |
| Caroline County Humane Society Inc | Ridgely | 501(c)(3) | 1996 | $809,846 | $690,999 | 2025-06 |
| The Humane Society of Dorchester County Inc | Cambridge | 501(c)(3) | 1983 | $780,534 | $2.3 million | 2025-06 |
| Frederick County Humane Society Inc | Frederick | 501(c)(3) | 1942 | $775,265 | $1.7 million | 2024-12 |
| Retired Racehorse Project LTD | Edgewater | 501(c)(3) | 2011 | $767,897 | $270,953 | 2024-12 |
| United States War Dogs Association Inc | Towson | 501(c)(3) | 2024 | $753,531 | $3 million | 2024-12 |
| Vegan Hacktivists Inc | Mount Airy | 501(c)(3) | 2025 | $729,224 | $384,276 | 2025-12 |
| Petconnect Rescue Inc | Potomac | 501(c)(3) | 2005 | $717,463 | $1.9 million | 2025-09 |
| Pet Rescue of Maryland Independent Sanctuary and Education Inc | Monkton | 501(c)(3) | 2006 | $708,039 | $927,722 | 2024-12 |
| Fetch Thrift Shop Inc | Frederick | 501(c)(3) | 2022 | $705,535 | $682,371 | 2024-12 |
| Animal Welfare League of Frederick County | Frederick | 501(c)(3) | 2001 | $698,187 | $764,262 | 2025-06 |
| Beyond the Wire Inc | Owings Mills | 501(c)(3) | 2018 | $622,409 | $837,564 | 2025-12 |
| Acvs Foundation Inc | Germantown | 501(c)(3) | 1996 | $612,850 | $6 million | 2024-12 |
| Senior Dog Sanctuary of Maryland Inc | Severn | 501(c)(3) | 2015 | $605,593 | $848,940 | 2024-12 |
| Show Your Soft Side Inc | Baltimore | 501(c)(3) | 2013 | $587,135 | $368,355 | 2024-12 |
| After the Races | Elkton | 501(c)(3) | 2013 | $570,465 | $1.6 million | 2025-12 |
| Canine Humane Network | Columbia | 501(c)(3) | 2016 | $560,490 | $45,268 | 2024-12 |
| Pets With Disabilities | PRNC Frederck | 501(c)(3) | 2005 | $549,794 | $1.5 million | 2025-06 |
| Spca & Humane Society of Prince Georges County Inc | Bowie | 501(c)(3) | 2025 | $502,148 | $1.1 million | 2025-06 |
| Oriole Dog Training Club Incorporated | Halethorpe | 501(c)(3) | 2018 | $488,751 | $1.3 million | 2025-12 |
| Your Dogs Friend Inc | Rockville | 501(c)(3) | 2006 | $476,112 | $643,380 | 2025-12 |
| Native America Humane Society | Baltimore | 501(c)(3) | 2014 | $442,262 | $174,116 | 2025-12 |
| Animal Welfare League of Montgomery County Inc | Gaithersburg | 501(c)(3) | 2005 | $439,582 | $312,707 | 2025-12 |
| Midatlantic Horse Rescue Inc | Chesapeake Cy | 501(c)(3) | 2011 | $433,023 | $537,463 | 2025-12 |
| The Big Fix | Hyattsville | 501(c)(3) | 2002 | $401,038 | $325,644 | 2025-12 |
| House of Hope Animal Rescue Inc | Elkton | 501(c)(3) | 2015 | $396,416 | $175,607 | 2025-12 |
| Friends of Rabbits Inc | Columbia | 501(c)(3) | 1998 | $390,037 | $218,399 | 2025-12 |
| Helping Every Animal Receive Treatment | Annapolis | 501(c)(3) | 2025 | $378,337 | $314,220 | 2025-12 |
| United Spay Alliance | Walkersville | 501(c)(3) | 2015 | $376,244 | $1.3 million | 2025-12 |
| Mid-Atlantic German Shepherd Rescue Inc | Mount Airy | 501(c)(3) | 1999 | $351,238 | $604,456 | 2025-12 |
| Maryland Horse Foundation Inc | Reisterstown | 501(c)(3) | 1990 | $350,114 | $1.8 million | 2025-12 |
| Parasdham USA Inc | Ashton | 501(c)(3) | 2022 | $342,341 | $293,307 | 2024-12 |
| February Star Sanctuary Inc | Knoxville | 501(c)(3) | 2015 | $339,439 | $4,953 | 2024-12 |
| Friends of All Critters at Shelters Inc | Potomac | 501(c)(3) | 2022 | $339,268 | $87,646 | 2024-12 |
| Calvert Animal Welfare League Inc | PRNC Frederck | 501(c)(3) | 1993 | $336,129 | $1.4 million | 2025-12 |
| Kennel To Couch Inc | Bel Air | 501(c)(3) | 2018 | $334,401 | $207,510 | 2025-12 |
| Animal Allies Rescue Foundation Inc | Baltimore | 501(c)(3) | 2013 | $325,708 | $321,626 | 2025-12 |
| Fifty Shades of Furr Inc | Hagerstown | 501(c)(3) | 2019 | $314,656 | $122,130 | 2025-08 |
| Miris Legacy Inc | Rockville | 501(c)(3) | 2022 | $305,286 | $27,747 | 2024-12 |
| Oldies But Goodies Cocker Rescue Inc | Bethesda | 501(c)(3) | 1999 | $301,823 | $570,731 | 2025-12 |
| Purr Chance Inc | Ft Washington | 501(c)(3) | 2014 | $300,500 | $2.5 million | 2022-12 |
| Rosies Farm Sanctuary Inc | Potomac | 501(c)(3) | 2021 | $294,773 | $34,599 | 2025-12 |
| City Ranch Inc | Baltimore | 501(c)(3) | 2018 | $290,937 | $161,391 | 2025-03 |
| Atlantic Conservation Partnership LTD | Bethesda | 501(c)(3) | 1994 | $285,760 | $3.3 million | 2024-12 |
| A Cats Life Rescue | Hyattsville | 501(c)(3) | 2019 | $284,886 | $176,319 | 2025-12 |
| Beagle Rescue Education and Welfare B R E W of Northern Virginia | Derwood | 501(c)(3) | 2000 | $279,216 | $484,307 | 2025-12 |
| Kent County Border Collie Rescue Inc | Chestertown | 501(c)(3) | 2000 | $278,978 | $236,250 | 2025-12 |
| Laurel Cats Inc | Laurel | 501(c)(3) | 2014 | $274,019 | $396,948 | 2025-12 |
| Friends of Montgomery County Animals Inc | Germantown | 501(c)(3) | 1976 | $273,975 | $682,289 | 2025-12 |
| Rural Dog Rescue | Chester | 501(c)(3) | 2013 | $261,410 | $262,143 | 2025-12 |
| Beagle Rescue of Southern Maryland Inc | Waldorf | 501(c)(3) | 2001 | $248,746 | $60,256 | 2024-12 |
| Salisbury MD Kennel Club Inc | Salisbury | 501(c)(4) | 2000 | $244,868 | $612,942 | 2025-12 |
| They Rescue Us Inc | Phoenix | 501(c)(3) | 2017 | $236,991 | $81,110 | 2024-12 |
| Animal Miracles Inc | Baltimore | 501(c)(3) | 2023 | $236,260 | $23,519 | 2025-12 |
| St Marys Animal Welfare League Inc | Leonardtown | 501(c)(3) | 1993 | $235,915 | $865,334 | 2022-12 |
| Lunas House Inc | Abingdon | 501(c)(3) | 2007 | $217,273 | $1.5 million | 2025-12 |
| Bowie Citizens for Local Animal Welfare Inc | Bowie | 501(c)(3) | 2009 | $208,340 | $69,588 | 2025-12 |
| Partnership for Animal Welfare Inc | Greenbelt | 501(c)(3) | 1997 | $199,954 | $601,544 | 2024-12 |
| Hero Rescue Incorporated | Jarrettsville | 501(c)(3) | 2020 | $199,818 | $83,259 | 2025-12 |
| Rise Above Animal Rescue & Sanctuary Inc | Pasadena | 501(c)(3) | 2023 | $196,515 | $3,745 | 2025-12 |
| National Capital Area Branch of Aalas | Frederick | 501(c)(3) | 1979 | $194,959 | $166,307 | 2025-12 |
| Tip Me Frederick Inc | Walkersville | 501(c)(3) | 2013 | $191,996 | $111,622 | 2025-12 |
| Thoroughbred Placement Resources Inc | Uppr Marlboro | 501(c)(3) | 2009 | $189,621 | $145,411 | 2025-12 |
| Southern Maryland Spay and Neuter Inc | Port Republic | 501(c)(3) | 2004 | $189,273 | $13,827 | 2025-12 |
| Fallston Animal Rescue Movement Inc | Bel Air | 501(c)(3) | 2000 | $186,729 | $196,078 | 2025-12 |
| Freckles Foundation & Animal Rescue | Silver Spring | 501(c)(3) | 2023 | $185,754 | $22,037 | 2025-12 |
| Animal Advocates of Howard County Inc | Ellicott City | 501(c)(3) | 1995 | $181,863 | $324,680 | 2025-09 |
| Delmarva Nesting Foundation | Easton | 501(c)(3) | 2009 | $181,250 | $130,880 | 2025-06 |
| Maryland Ornithological Society Inc | Baltimore | 501(c)(3) | 2011 | $179,449 | $3.8 million | 2025-04 |
| Kit Cares Inc | Chestertown | 501(c)(3) | 2019 | $179,106 | $108,745 | 2025-12 |
| Town Cats Inc | Berlin | 501(c)(3) | 1999 | $174,470 | $39,319 | 2025-12 |
| Breakaway Action Dogs Inc B A D Inc | Frederick | 501(c)(4) | 2016 | $169,134 | $127,893 | 2025-12 |
| Pets On Wheels Inc | Baltimore | 501(c)(3) | 1990 | $162,752 | $246,957 | 2024-09 |
| Lovepaws | Rockville | 501(c)(3) | 2019 | $162,179 | $91,737 | 2024-12 |
| Canine Training Assoc Inc | Beltsville | 501(c)(4) | 2024 | $162,101 | $203,290 | 2025-12 |
| Salisbury Zoo Foundation Inc | Salisbury | 501(c)(3) | 1983 | $161,991 | $541,256 | 2025-06 |
| Eldorado Farm Inc | Mechanicsvlle | 501(c)(3) | 2022 | $161,904 | $74,796 | 2025-12 |
| Pitties & Purrs Rescue Inc | Dundalk | 501(c)(3) | 2013 | $160,297 | $33,489 | 2024-12 |
| Humane Society of Sommerset County Inc | Princess Anne | 501(c)(3) | 2002 | $158,598 | $265,809 | 2024-12 |
| Saving Grace Animal Rescue of Maryland Inc | Millersville | 501(c)(3) | 2013 | $157,852 | $58,684 | 2025-12 |
| Save the Golden Lion Tamarin | Silver Spring | 501(c)(3) | 2006 | $156,435 | $426,841 | 2025-12 |
| Adopt A Homeless Animal Rescue Inc | Baltimore | 501(c)(3) | 2009 | $155,177 | $74,383 | 2024-12 |
| Chesapeake Cats & Dogs Incorporated | Queenstown | 501(c)(3) | 2007 | $154,533 | $234,108 | 2025-12 |
| Susquehannock Wildlife Society Inc | Darlington | 501(c)(3) | 2013 | $153,410 | $27,216 | 2024-12 |
| Chesapeake Feline Association Inc | North East | 501(c)(3) | 2009 | $150,309 | $229,629 | 2025-12 |
| Coalition of Feral Cat Caretakers Inc | Taneytown | 501(c)(3) | 2003 | $148,918 | $102,151 | 2025-12 |
| Feral Cat Rescue Inc | Mechanicsvlle | 501(c)(3) | 2009 | $148,561 | $105,178 | 2025-12 |
| Already Home Animal Rescue Inc | Monkton | 501(c)(3) | 2023 | $148,495 | $21,269 | 2023-12 |
| Lifeline Horse Rescue and Rehabilitation Inc | Gaithersburg | 501(c)(3) | 2017 | $148,354 | $16,438 | 2025-12 |
| All Shepherd Rescue of the United States Inc | Baltimore | 501(c)(3) | 2010 | $145,940 | $178,854 | 2024-12 |
| Friends for Life Cat Rescue Inc | Frederick | 501(c)(3) | 2009 | $144,567 | $56,337 | 2025-12 |
| Cat Rescue of Maryland Inc | Baltimore | 501(c)(3) | 1993 | $143,461 | $48,188 | 2024-12 |
| Friends of Anne Arundel County Anim Als Inc | Millersville | 501(c)(3) | 2014 | $143,384 | $185,654 | 2025-12 |
| Stepping Stone Animal Society | Cumberland | 501(c)(3) | 2015 | $141,664 | $24,814 | 2024-12 |
| Doberman Pinscher Rescue of Pa Inc | Bel Air | 501(c)(3) | 1999 | $140,427 | $238,793 | 2025-05 |
| Owl Moon Raptor Center Inc | Boyds | 501(c)(3) | 2014 | $138,761 | $259,748 | 2024-12 |
| Carroll Kennel Club Inc | Westminster | 501(c)(4) | 2005 | $137,000 | $230,248 | 2025-12 |
| Husky Education and Rescue Team Inc | Severn | 501(c)(3) | 2018 | $135,700 | $57,731 | 2025-12 |
| Feline Rescue Association Inc | Reisterstown | 501(c)(3) | 2022 | $133,003 | $33,299 | 2024-12 |
| Safe Haven Equine Warriors Inc | Sykesville | 501(c)(3) | 2018 | $132,819 | $293,241 | 2025-12 |
| Rescuegroups Org Inc | Odenton | 501(c)(3) | 2002 | $132,081 | $175,176 | 2024-12 |
| Wellbeing International Inc | Chevy Chase | 501(c)(3) | 2019 | $131,327 | $115,286 | 2024-12 |
| Maryland Horse Rescue Inc | Westminster | 501(c)(3) | 2000 | $130,765 | $41,197 | 2024-12 |
| Petey and Furends Inc | Rockville | 501(c)(3) | 2020 | $130,737 | $108,060 | 2025-12 |
| Pepspalsrescue | Brookeville | 501(c)(3) | 2024 | $129,118 | $23,473 | 2025-12 |
| Friends of the Patuxent Wildlife Research Center Inc | Laurel | 501(c)(3) | 1993 | $127,803 | $405,154 | 2025-09 |
| Phoenix Wildlife Center Inc | Phoenix | 501(c)(3) | 1995 | $127,018 | $592,061 | 2024-12 |
| Peninsula Colony Cats Inc | Essex | 501(c)(3) | 2025 | $123,473 | $21,540 | 2025-12 |
| Tails of Hope Sanctuary Inc | Taneytown | 501(c)(3) | 2000 | $121,234 | $120,432 | 2025-12 |
| Muddy Boots Horse Farm and Rescue | Warwick | 501(c)(3) | 2024 | $119,532 | $1 | 2024-12 |
| Cocker Spaniel Adoption Center | Westminster | 501(c)(3) | 2004 | $117,587 | $38,536 | 2024-12 |
| Eskie Rescuers United American Eskimo Dog Rescue | Randallstown | 501(c)(3) | 2004 | $117,147 | $319,943 | 2025-12 |
| Frederick Friends of Our County Animal Shelter Inc | Frederick | 501(c)(3) | 2016 | $116,698 | $106,044 | 2025-12 |
| Halos Haven Rescue Inc | St Michaels | 501(c)(3) | 2011 | $113,211 | $9,975 | 2025-12 |
| Shadow Cats TNR Inc | Abingdon | 501(c)(3) | 2015 | $112,453 | $180,339 | 2025-12 |
| Lonely Hearts Animal Rescue Inc | Jefferson | 501(c)(3) | 2009 | $109,677 | $334,736 | 2025-12 |
| Mid-Atlantic German Shorthair Pointer Inc | Sykesville | 501(c)(3) | 2001 | $108,229 | $316,939 | 2026-06 |
| Beltsville Community Cats | Beltsville | 501(c)(3) | 2020 | $107,729 | $92,312 | 2025-12 |
| Freedom Hill Horse Rescue | Dunkirk | 501(c)(3) | 2006 | $106,026 | $198,995 | 2025-12 |
| American Belgian Malinois Rescue Trust | Tilghman | 501(c)(3) | 2002 | $101,498 | $34,511 | 2025-12 |
| Almost Home Dog Rescue Inc | Marriottsvl | 501(c)(3) | 2018 | $99,785 | $83,112 | 2025-12 |
| Northeastern Maryland Kennel Club Inc | Joppa | 501(c)(4) | 2003 | $99,000 | $145,098 | 2025-12 |
| Mid Atlantic Scottish Terrier Education and Rescue | Silver Spring | 501(c)(3) | 2014 | $95,490 | $9,563 | 2025-12 |
| African Fund for Endangered Wildlife Inc | Baltimore | 501(c)(3) | 1979 | $93,764 | $39,510 | 2025-12 |
| Paws for Life Inc | Chesapeake Cy | 501(c)(3) | 1998 | $92,903 | $1.1 million | 2024-12 |
| Montgomery County Society for the Prevention of Cruelty To Animals I | Potomac | 501(c)(3) | 2019 | $92,310 | $3.3 million | 2025-09 |
| Cats R Us Inc | Gambrills | 501(c)(3) | 2002 | $92,132 | $71,303 | 2025-12 |
| Finally Home Animal Rescue Inc | Sykesville | 501(c)(3) | 2026 | $90,318 | $18,431 | 2022-12 |
| Meru Animal Welfare Organization USA Incorporated | Baltimore | 501(c)(3) | 2022 | $90,313 | $50,816 | 2025-12 |
| Equine Rescue Ambulance Inc | Phoenix | 501(c)(3) | 2018 | $87,979 | $150,997 | 2025-12 |
| Saving Future Feral Cats Inc | Stevensville | 501(c)(3) | 2017 | $87,612 | $21,881 | 2024-12 |
| Gaited Advocate Intervention Team Inc | Boyds | 501(c)(3) | 2016 | $84,498 | $1 | 2025-08 |
| Key To Lions Heart Rescue Inc | Derwood | 501(c)(3) | 2018 | $83,083 | $132,813 | 2024-12 |
| Ascension Hermitage and Sanctuary Inc | Westover | 501(c)(3) | 2018 | $82,999 | $351,864 | 2025-12 |
| U S Kennels Incorporated | Salisbury | 501(c)(3) | 2017 | $82,763 | $64,295 | 2025-06 |
| Double Dog Dare Rescue Inc | Walkersville | 501(c)(3) | 2015 | $82,381 | $79,233 | 2023-12 |
| Pet Good Samaritan Fund Inc | White Hall | 501(c)(3) | 2024 | $81,375 | $73,447 | 2025-12 |
| Maryland Bird Conservation Partnership | Smithsburg | 501(c)(3) | 2019 | $80,967 | $33,555 | 2025-12 |
| A Home of Their Own Animal Rescue | Silver Spring | 501(c)(3) | 2024 | $79,099 | $37,984 | 2025-12 |
| Burleigh Manor Animal Sanctuary and Eco-Retreat | Ellicott City | 501(c)(3) | 2012 | $77,856 | $128,680 | 2025-12 |
| Maryland Westie Rescue Inc | Silver Spring | 501(c)(3) | 2008 | $77,367 | $69,137 | 2025-12 |
| House of Puddles Inc | Frederick | 501(c)(3) | 2005 | $75,729 | $66,998 | 2025-12 |
| Jet Crossing Stables & Sanctuary Inc | Elkton | 501(c)(3) | 2025 | $75,517 | $408 | 2025-12 |
| Elite Registry of Working Dogs Inc | Charlott Hall | 501(c)(3) | 2014 | $74,131 | $34,162 | 2025-09 |
| Montgomery County Community Cat Coalition Inc | Spencerville | 501(c)(3) | 2017 | $73,868 | $59,736 | 2025-06 |
| Fairy Tails Rescue Inc | Forest Hill | 501(c)(3) | 2015 | $73,789 | $24,934 | 2024-12 |
| Travellers Rest Farm Sanctuary | Hughesville | 501(c)(3) | 2019 | $73,694 | $1 | 2025-12 |
| Coffee and Paws Rescue Inc | Baldwin | 501(c)(3) | 2024 | $73,128 | $15,658 | 2024-12 |
| Peaceful Promise Farm LLC | Tracys LNDG | 501(c)(3) | 2025 | $72,464 | $0 | 2022-12 |
| Barking Holler Animal Sanctuary Inc | Dickerson | 501(c)(3) | 2014 | $72,424 | $39,099 | 2024-12 |
| Animal Safe Haven and Adoptions Inc | Catonsville | 501(c)(3) | 2015 | $71,389 | $1,284 | 2025-12 |
| Furry Paws Foster Inn Inc | Parkville | 501(c)(3) | 2022 | $69,975 | $4,342 | 2025-12 |
| Friends of Felines Inc | Port Republic | 501(c)(3) | 2004 | $69,442 | $162,665 | 2025-12 |
| Hidden View Rescue | Davidsonville | 501(c)(3) | 2023 | $69,349 | $10,324 | 2024-12 |
| Reforge Inc | Frederick | 501(c)(3) | 2019 | $68,632 | $2,359 | 2024-12 |
| Tiplings Company | Thurmont | 501(c)(3) | 2025 | $68,514 | $38,378 | 2025-12 |
| Good Shepherd Cat Sanctuary | Delmar | 501(c)(3) | 1998 | $64,890 | $116,819 | 2025-12 |
| Paradise Farm Rescue and Sanctuary Inc | Forest Hill | 501(c)(3) | 2022 | $64,701 | $2,200 | 2024-12 |
| Julianas Animal Sanctuary Inc | Gaithersburg | 501(c)(3) | 2015 | $64,458 | $489,836 | 2024-12 |
| A Fund for Veterinary Care Inc | Gaithersburg | 501(c)(3) | 2021 | $64,365 | $44,165 | 2024-12 |
| Breakfast Club Cats | Essex | 501(c)(3) | 2023 | $62,742 | $6,596 | 2026-01 |
| Puppy Paws Rescue | Huntingtown | 501(c)(3) | 2013 | $61,684 | $55,343 | 2024-12 |
| Please Inc | Randallstown | 501(c)(3) | 2010 | $61,517 | $2,832 | 2025-12 |
| Cat Tails Inc | Crofton | 501(c)(3) | 2003 | $60,576 | $160 | 2025-12 |
| Homeward Bound Schnauzer Rescue Inc | Millersville | 501(c)(3) | 2016 | $58,723 | $10,162 | 2023-12 |
| Reach Out Rescue and Resources | Westminster | 501(c)(3) | 2010 | $57,967 | $20,394 | 2025-12 |
| Puppies Are Worth Saving Inc | Forest Hill | 501(c)(3) | 2015 | $57,900 | $8,121 | 2025-12 |
| Greyhound Welfare Inc | Montgomry VLG | 501(c)(3) | 2002 | $55,629 | $42,823 | 2024-12 |
| Taras House Animal Rescue Inc | Sykesville | 501(c)(3) | 2002 | $51,834 | $55,940 | 2025-12 |
| Whiskers | Westernport | 501(c)(3) | 2018 | $51,536 | $3,825 | 2024-12 |
| Little Beans Orphan Ark Rescue Corp | La Plata | 501(c)(3) | 2020 | $50,542 | $1,405 | 2024-12 |
| Adoption Option Dog Rescue Inc | Glyndon | 501(c)(3) | 2018 | $49,333 | $49,333 | 2025-12 |
| Nonifarm | Lothian | 501(c)(3) | 2017 | $47,760 | $6,878 | 2025-12 |
| Boxer Transfer Network LTD | Westminster | 501(c)(3) | 2012 | $46,665 | $3,423 | 2025-12 |
| Snip Tuck Inc | Secretary | 501(c)(3) | 2008 | $46,626 | $46,822 | 2024-12 |
| Greyhound Pet Adoption Maryland Inc | Baltimore | 501(c)(3) | 1998 | $44,523 | $117,222 | 2024-12 |
| Just One More Dachshund Rescue | Huntingtown | 501(c)(3) | 2018 | $42,576 | $18,607 | 2025-08 |
| Savage River Farms Inc | Oakland | 501(c)(3) | 2022 | $42,302 | $245,794 | 2024-12 |
| Friends of the Linda L Kelley Animal Shelter | Sunderland | 501(c)(3) | 2018 | $41,581 | $19,608 | 2024-12 |
| Bruno Project Rescue Inc | Columbia | 501(c)(3) | 2023 | $41,545 | $20,817 | 2025-12 |
| Wildlife Rescue Inc | Monkton | 501(c)(3) | 1996 | $40,099 | $428,451 | 2025-12 |
| Cheryls Rescue Ranch Inc | Odenton | 501(c)(3) | 2003 | $39,914 | $112,211 | 2024-12 |
| Montgomery County Partners for Animal Well-Being Inc | Rockville | 501(c)(3) | 2010 | $38,347 | $16,453 | 2024-12 |
| Global Solace Inc | Bealsville | 501(c)(3) | 2011 | $36,076 | $30,609 | 2025-12 |
| Maryland Wildlife and Heritage Association Inc | Queenstown | 501(c)(3) | 2024 | $33,500 | $6,500 | 2024-12 |
| Howard County 4-H Foundation Inc | Lisbon | 501(c)(3) | 2014 | $31,793 | $28,798 | 2025-12 |
| Gentle Friends Inc | Mount Airy | 501(c)(3) | 2018 | $30,160 | $1,544 | 2024-12 |
| House Rabbit Society Baltimore - DC Chapter Inc | Baltimore | 501(c)(3) | 1998 | $30,035 | $92,191 | 2024-12 |
| American Ferret Association Inc | Frederick | 501(c)(3) | 1992 | $29,957 | $199,898 | 2025-12 |
| Russell Rescue Inc | Lutherville | 501(c)(3) | 2005 | $27,554 | $376,715 | 2025-12 |
| Rise Up Foundation of Worcester County | Berlin | 501(c)(3) | 2009 | $26,945 | $113,961 | 2026-03 |
| Wiggles Way Rescue | Silver Spring | 501(c)(3) | 2025 | $26,618 | $9,118 | 2025-12 |
| World Seabird Union | Bethesda | 501(c)(3) | 2012 | $25,411 | $147,869 | 2025-12 |
| Island Dog Incorporated | Belcamp | 501(c)(3) | 2007 | $25,111 | $21,061 | 2025-12 |
| Small Angels Rescue Inc | Monrovia | 501(c)(3) | 2004 | $24,004 | $321,253 | 2024-12 |
| Ronnie Stanley Foundation | Linthicum HTS | 501(c)(3) | 2021 | $22,945 | $23,181 | 2025-12 |
| McQe Mobile Pet Pantry Incorporated | Hampstead | 501(c)(3) | 2019 | $22,604 | $25,498 | 2024-12 |
| Goldheart Golden Retrievers Rescue Inc | Chester | 501(c)(3) | 1999 | $21,560 | $132,504 | 2025-12 |
| Roxies Fund Inc | Wheaton | 501(c)(3) | 2000 | $21,049 | $44,763 | 2025-12 |
| Friends of KC | Boonsboro | 501(c)(3) | 2022 | $20,452 | $44,663 | 2025-12 |
| Otterhound Club of America Inc | Laurel | 501(c)(4) | 2009 | $18,510 | $90,198 | 2025-05 |
| Greener Pastures Equine Sanctuary Inc | Warwick | 501(c)(3) | 2002 | $18,012 | $110,872 | 2025-12 |
| Essex-Middle River Fishing Club | Middle River | 501(c)(3) | 2022 | $15,484 | $0 | 2024-10 |
| Mountain Maryland Search and Rescue Inc | Cumberland | 501(c)(3) | 2020 | $14,236 | $20,613 | 2025-12 |
| Feral Cats of Bethlehem Steel Inc | Glen Arm | 501(c)(3) | 2021 | $13,443 | $4,166 | 2025-12 |
| S K Feline Furbabies Rescue Inc | Williamsport | 501(c)(3) | 2017 | $12,957 | $3,513 | 2025-12 |
| Chesapeake Kennel Club Inc | Tracys LNDG | 501(c)(4) | 2012 | $10,128 | $148,199 | 2025-06 |
| Save East Coast Reef Inc | Montgomry VLG | 501(c)(3) | 2021 | $10,020 | $545 | 2024-12 |
| United 2 Save Animals Inc | Frederick | 501(c)(3) | 2012 | $8,892 | $47,469 | 2025-12 |
| Mason and Dixon Kennel Club Inc | Boonsboro | 501(c)(7) | 2020 | $8,443 | $352,591 | 2025-10 |
| Serendipityanimalrescueinc | La Plata | 501(c)(3) | 2022 | $6,274 | $1 | 2024-12 |
| Enchanted Haven Horse Rescue | Ridgely | 501(c)(3) | 2008 | $6,050 | $7,741 | 2025-12 |
| Afghan Hound Club of America Rescue | Glenelg | 501(c)(3) | 2018 | $4,176 | $66,982 | 2024-12 |
| Stephanies Saving Grace Animal Rescue Inc | Hanover | 501(c)(3) | 2021 | $2,826 | $1,947 | 2024-12 |
| Land of Puregold Foundation Inc | Owings Mills | 501(c)(3) | 2005 | $2,668 | $12,449 | 2024-12 |
| Where the Wild Things Are Rescue | Glen Burnie | 501(c)(3) | 2020 | $253 | $421 | 2025-12 |
| Dog Shelter & Rescue Unification Network LLC | Uppr Marlboro | 501(c)(3) | 2025 | $56 | $1,063 | 2025-12 |
| 2124 Maryland Avenue Project | Baltimore | 501(c)(3) | 2026 | |||
| 3 Acres Rescue | Chesapeak BCH | 501(c)(3) | 2022 | $0 | $0 | 2025-04 |
| 5 Second Paws Inc | Salisbury | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| A F Wildlife Foundation Inc | Cumberland | 501(c)(3) | 2020 | $0 | $0 | 2024-12 |
| A Greyhounds Wish Inc | Severn | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| A Pet for Life Inc | Salisbury | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| A Vegan Life Inc | Bethesda | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Airedale Rescue and Adoption Service Inc | Columbia | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Akitos World Inc | Bowie | 501(c)(3) | 2026 | |||
| All Animal Rescue LTD | Lothian | 501(c)(3) | 2002 | $0 | $0 | 2025-12 |
| All Creatures Animal Sancutary and Fellowship Church | Hillsboro | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| All Creatures Great and Small Wildlife Center Inc | Columbia | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| All Fur Paws Animal Sanctuary and Adoption Center | Whaleyville | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| All Pets Animal Welfare | Huntingtown | 501(c)(3) | 2026 | |||
| Alternative Congress Trust Inc | Baltimore | 501(c)(3) | 2001 | $0 | $503,229 | 2025-06 |
| Amy Caprio Classic Corp | Rosedale | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Angel Wings Sanctuary | Baltimore | 501(c)(3) | 2025 | $0 | $725 | 2025-12 |
| Angels Alliance Incorporated | Cockeysville | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Angels of Egypt Rescue | Hurlock | 501(c)(3) | 2026 | |||
| Animal Alliance of the Americas Inc | Baltimore | 501(c)(3) | 2023 | $0 | $1 | 2024-12 |
| Animal Park Care & Rescue Inc | Cumberland | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Animal Positive Coalition | Fairplay | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Animal Rehab Support | Ellicott City | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Animal Relief Inc | Annapolis | 501(c)(3) | 1996 | $0 | $0 | 2023-12 |
| Animal Rescue & Outreach Organization | Leonardtown | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Animal Rescue Foundation | La Plata | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Animal Welfare League of Queen Anne-S County | Queenstown | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Animal and Wildlife Rescue Coalition | Rosedale | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Aquarium Club of Maryland Inc | Aberdeen | 501(c)(3) | 2023 | $7,174 | 2024-12 | |
| Archies Blankets Across America Inc | Rosedale | 501(c)(3) | 2026 | |||
| Ardens Arc Inc | Baltimore | 501(c)(3) | 2003 | $0 | $0 | 2024-12 |
| Ark of Hope Rescue | Oldtown | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| At Last Farm Inc | Woodstock | 501(c)(3) | 2026 | |||
| Atlantic English Spot Club | White Hall | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Atlantic Estuarine Research Society Inc | Davidsonville | 501(c)(3) | 2014 | $49,434 | 2024-12 | |
| Aussenseiter Schutzhund Club Inc | Severn | 501(c)(3) | 2026 | |||
| Australian Stock Horse Society USA Branch | Chestertown | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| B-More Dog Inc | Ellicott City | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Back To the Wild Rescue & Rehab | California | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Baltimore County Horse Council | Glyndon | 501(c)(3) | 2022 | $0 | $0 | 2026-06 |
| Baltimore Critter Society Inc | Baltimore | 501(c)(3) | 2026 | |||
| Barbado Da Terceira Rescue Rehabili Tation & Education | Frederick | 501(c)(3) | 2026 | |||
| Basset Hound Rescue League | Ft Washington | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Bayside Feline Friends | Snow Hill | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Bears Legacy Pet Foundation | Boyds | 501(c)(3) | 2026 | |||
| Bee Whole Sanctuary Incorporated | Westminster | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Bengal Rescue Network Corperation | Baltimore | 501(c)(3) | 2008 | $0 | $0 | 2024-12 |
| Beyond A Buddy for Prince Georges County Animal Shelter Inc | Mitchellville | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Beyondthepawspetrescue Corporation | Halethorpe | 501(c)(3) | 2025 | |||
| Big Bruno Animal Rescue Foundation Inc | Gaithersburg | 501(c)(3) | 2026 | |||
| Big Dog Run Foundation Inc | Davidsonville | 501(c)(3) | 2025 | |||
| Big Purple Barn Inc | Bowie | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Biophilia Foundation Inc | Chester | 501(c)(3) | 2002 | $4 million | 2025-12 | |
| Black Dogs and Company Rescue Inc | Darlington | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
| Blue Angel Rescue Wildlife Rehabilitation Inc | Lusby | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Blue Ridge Russell Terrier Club | Mount Airy | 501(c)(3) | 2022 | $0 | $0 | 2026-07 |
| Blufrog Farm Inc | Parsonsburg | 501(c)(3) | 2025 | |||
| Boniface Animal Rescue Corporation | Ft Washington | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
| Brave Babes Animal Rescue | New Market | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Breakfast at Sniffanys Inc | Solomons | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Breakfastwithboxers Incorporated | Silver Spring | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Bring Em Home Animal Rescue & Trapping | Essex | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Bryce Creek Sanctuary Inc | Queenstown | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Bulldog Better Inc | Columbia | 501(c)(3) | 2026 | |||
| By His Grace Ministries Inc | Clear Spring | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Callie Cat Adoptions Inc | Baltimore | 501(c)(3) | 1991 | $0 | $0 | 2025-12 |
| Calvin Ehrendreich Foundation Incorporated | Silver Spring | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Canine Corps Dog Sanctuary Inc | Brandywine | 501(c)(3) | 2010 | $0 | $0 | 2025-12 |
| Capital Animal Rescue & Environmental Foundation | Potomac | 501(c)(3) | 2021 | $6,804 | 2025-12 | |
| Caretta Inspired Journeys Inc | Dunkirk | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Cat Crusaders Inc | North East | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Cause for Paws Cares Inc | Bowie | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| Cecil County Hounds & Sportsmans Association | Chesapeake Cy | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Cecil County Retrievers Association | Conowingo | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Cedarcrest Homestead Foster Tails and Kitten Rescue | Salisbury | 501(c)(3) | 2023 | $0 | $0 | 2026-01 |
| Centromar Inc | Baltimore | 501(c)(3) | 2026 | |||
| Chaos To the Rescue | Baltimore | 501(c)(3) | 2024 | $0 | $0 | 2025-11 |
| Charm City Companions Inc | Baltimore | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Chesapeake Marine Aquaria Society Maryland Inc | Annapolis | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Chesapeake Rescue Alliance Inc | Mechanicsvlle | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Chocolate Chip Dalmatian League | Adelphi | 501(c)(3) | 2003 | $0 | $0 | 2024-12 |
| Cisa Inc | Pasadena | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Clean Slate Rescue and Rehabilitation | Boyds | 501(c)(3) | 2015 | $0 | $0 | 2024-12 |
| Coalition for Animal Welfare Inc | Lothian | 501(c)(3) | 1984 | $0 | $0 | 2025-11 |
| Cocoa & Friends Cat Rescue Inc | White Marsh | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Cold Deer Hunting & Fishing Club Inc | Thurmont | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Community Cats Coalition | Berlin | 501(c)(3) | 2014 | $0 | $0 | 2026-04 |
| Community Cats MD Inc | Baltimore | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Community Kitties Rescue | Frederick | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Companion Animal Rescue Alliance | College Park | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Companion Animals Protection Alliance Capa | Greenbelt | 501(c)(3) | 2011 | |||
| Compass Rose Rescue- Maryland | Centreville | 501(c)(3) | 2025 | |||
| Crisfield and Smith Island Cultural Alliance Inc | Ewell | 501(c)(3) | 1991 | $0 | $0 | 2025-06 |
| Crooked Feather Parrot Rescue | Sykesville | 501(c)(3) | 2026 | |||
| Cuddles Cat Rescue | Thurmont | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Daisys Farm Friends Sanctuary Inc | Hebron | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Daniel A Nath Charitable Foundation Inc | Potomac | 501(c)(3) | 2022 | $6,976 | 2025-12 | |
| Daniel and Rachel Cat Rescue | Hyattsville | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Delmarva Cat Connection Inc | Ocean Pines | 501(c)(3) | 2002 | $0 | $0 | 2026-07 |
| Delmarva Poodle Rescue Inc | Annapolis | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Diamond in the Ruff Rescue Inc | Salisbury | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Dog Friendly Frederick | Frederick | 501(c)(3) | 2026 | |||
| Dog Owners Training Club of Maryland Incorporated | Mount Airy | 501(c)(4) | 2005 | $0 | $0 | 2026-08 |
| Dog Rescue of Maryland Inc | Pasadena | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Dogs Finding Dogs Inc | Baltimore | 501(c)(3) | 2010 | $0 | $0 | 2025-07 |
| Dogs XL Rescue Inc | Silver Spring | 501(c)(3) | 2012 | $0 | $0 | 2024-12 |
| Dr Michael Hutchins Impact On Wildlife Fund | Silver Spring | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Dragonfly Acres Farm | Odenton | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| E W Kingbird Land Conservancy Inc | Towson | 501(c)(3) | 2018 | $0 | $5,135 | 2025-12 |
| Eastern Shore Rabbit Rescue and Education Center Inc | Rock Hall | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Emerald City Ranch Rescue Inc | Pittsville | 501(c)(3) | 2015 | $0 | $0 | 2026-04 |
| Equihab Foundation LTD | Rising Sun | 501(c)(3) | 2012 | $0 | $0 | 2023-12 |
| Estancia de Amanecer Cat Sanctuary Inc | Crisfield | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Faf Rescue & Sanctuary Limited | Elkton | 501(c)(3) | 2026 | |||
| Fair Hill Emergency Response Team Inc | Elkton | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Faith Paws Partners | Waldorf | 501(c)(3) | 2026 | |||
| Farm Sweet Farm Inc | Mount Airy | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Fetch Lost Dog Recovery | Clear Spring | 501(c)(3) | 2026 | |||
| Fireside Hound & Horse Animal Rescue | Mechanicsvlle | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Fish Feel Inc | Silver Spring | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Fixing Cats for Shore | E New Market | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Fletcher Foundation Inc | Preston | 501(c)(3) | 2021 | $390,489 | 2025-12 | |
| Flipflops Animal Sanctuary | Huntingtown | 501(c)(3) | 2021 | $0 | $0 | 2024-12 |
| Flybutter Animal Rescue Inc | Princess Anne | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Flying Duck Farm Horse Sanctuary Inc | Woodstock | 501(c)(3) | 2023 | $1,098 | 2024-12 | |
| For All Animals Inc | Sparrows PT | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| For Otis Sake | Hagerstown | 501(c)(3) | 2014 | $0 | $0 | 2023-10 |
| Forever Changed Animal Rescue Inc | Potomac | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Four-Legged Forgotten Oldies Senior Animal Farm Inc | Baldwin | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Fox Lea Farm Mini Equine Rescue | Dickerson | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Franklin Environmental Group LTD | Arnold | 501(c)(3) | 2004 | $0 | $0 | 2025-12 |
| Frederick County Auctioneers Association Inc | Middletown | 501(c)(6) | 2009 | $0 | $0 | 2025-12 |
| Friends of Baltimore County Cats | Butler | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Friends of Baltimore County Dogs Inc | Reisterstown | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Friends of Charlies Angels CR Inc | Willards | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Friends of Doncaster Trails Inc | Indian Head | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Friends of Eastern Neck Inc | Rock Hall | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Friends of St Michaels Dog Park Limited | St Michaels | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Friends of Whoof | Edgewater | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Frogtown Fosters Inc | Bel Air | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Fur Ever Homes Animal Rescue & Sanctuary of Maryland Inc | White Marsh | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Fur Fund | Huntingtown | 501(c)(3) | 2026 | |||
| Furever Home Inc | Mount Airy | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Furever Safe Inc | Hughesville | 501(c)(3) | 2017 | $0 | $0 | 2023-12 |
| Future Hope Inc | Marriottsvl | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Gabysgate Canine Equine Rescue and Sanctuary Inc | New Windsor | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Garrett County Humane Society Inc | Oakland | 501(c)(3) | 2001 | $0 | $0 | 2025-12 |
| Geoveterinary International Inc | Fallston | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Ginsasha Charitable Foundation | Waldorf | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Golden Grazers Sanctuary Inc | Manchester | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Good Life Animal Sanctuary Inc | Ellicott City | 501(c)(3) | 2026 | |||
| Good Shepherd Rescue LLC | Forest Hill | 501(c)(3) | 2026 | $0 | $1 | 2025-12 |
| Gracewoods Animal Sanctuary Inc | Poolesville | 501(c)(3) | 2026 | |||
| Gratitude Rat Rescue Inc | Pylesville | 501(c)(3) | 2017 | $0 | $0 | 2024-12 |
| Greyt Expectations Greyhound Rescue | Lusby | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Grounded With Nature Inc | Union Bridge | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Guardians of the Voiceless | Bowie | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Happy Go Lucky Dog Rescue | Flintstone | 501(c)(3) | 2026 | |||
| Happy Hubz Preventive Veterinary Care Inc | Libertytown | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Harford Hounds | Joppa | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Harmonic Ventures Inc | Baltimore | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Hatton Animal Rescue Foundation | Glenelg | 501(c)(3) | 2014 | $109,730 | 2024-12 | |
| Healing Hannimals | Elkton | 501(c)(3) | 2026 | |||
| Healing Hearts Rescue and Sanctuary Inc | Mount Airy | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Heart of the Earth Sanctuary and Rescue Inc | Cumberland | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Hearts With Paws Inc | Baltimore | 501(c)(3) | 2022 | $3,810 | 2023-12 | |
| Heartstrings Wildlife Orphanage and Rehab | Chester | 501(c)(3) | 2025 | $0 | $0 | 2024-10 |
| Help for Pets Inc | Brandywine | 501(c)(3) | 2016 | $0 | $0 | 2023-12 |
| Henpals Network Inc | Barnesville | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Hill Hounds Rescue and Animal Sanctuary Inc | Greensboro | 501(c)(3) | 2010 | $0 | $0 | 2024-12 |
| Hodgepodge Pets | Monkton | 501(c)(3) | 2019 | $0 | $0 | 2024-12 |
| Home Foundation Corporation | Randallstown | 501(c)(3) | 2026 | |||
| Home at Last Sanctuary Inc | Rockville | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Home for Fido | Potomac | 501(c)(3) | 2018 | $0 | $0 | 2023-12 |
| Homeward Bound Cat Rescue Inc | Cumberland | 501(c)(3) | 2012 | $0 | $0 | 2025-12 |
| Horse Lovers United Inc | Salisbury | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Hose2habitat Inc | N Bethesda | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Houndpilot Inc | Westminster | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| House of Misfits Inc | Manchester | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Humane Society of the Eastern Shore Inc | Ingleside | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Humbled Hearts Farm Sanctuary | Baltimore | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Humphrey House for Homeless Animals Corp | Abingdon | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Hyattsville Dog Training Club Inc | Hyattsville | 501(c)(7) | 2015 | $0 | $0 | 2025-12 |
| I-Paws Foundation | Temple Hills | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| Icarus Foundation Inc | Annapolis | 501(c)(3) | 2014 | $0 | $0 | 2025-06 |
| In the Company of Friends | Port Republic | 501(c)(3) | 2009 | $0 | $0 | 2023-12 |
| India Street Paws Incorporated | Bethesda | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Iridian Genomes Inc | Silver Spring | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Ivy Woods Feline Sanctuary Inc | Westminster | 501(c)(3) | 2014 | $0 | $0 | 2025-05 |
| Jenns Uncommon Critters Inc | Frederick | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Just One More Kitty | Odenton | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| K9 Ike Foundation Inc | Snow Hill | 501(c)(3) | 2022 | $0 | $0 | 2023-12 |
| K9X Fund Inc | Rockville | 501(c)(3) | 2024 | $0 | $0 | 2025-10 |
| Kaiser K9 Inc | Preston | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Keestone Katz Inc | Elkton | 501(c)(3) | 2016 | $0 | $0 | 2025-04 |
| Kellyns Wayward Waggers | Salisbury | 501(c)(3) | 2026 | |||
| Kenilles Kupboard Pet Pantry & Rescue Inc | Ocean City | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
| Kennel Club of Anne Arundel Inc | Severn | 501(c)(4) | 2025 | $0 | $0 | 2025-12 |
| Kids-4-K9s Incorporated | Timonium | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Kindness Matters Rescue Inc | Berlin | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Kindred Feathers and Roosts Inc | Elkton | 501(c)(3) | 2026 | $0 | $0 | 2025-12 |
| Kitten Kaboodle Society Inc | Ellicott City | 501(c)(3) | 2023 | $1 | 2024-12 | |
| Kittens in Bloom Inc | Federalsburg | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Kitty Angels Inc | Hagerstown | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Kitty City Rescue | Cambridge | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Kitty Colony Inc | Woodstock | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Kitty Kavorka Cat Sanctuary Inc | Salisbury | 501(c)(3) | 2016 | $0 | $0 | 2026-07 |
| Knine Rescue Inc | Ashton | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Kuddles & Kisses K-9 Rescue | Baltimore | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Labor of Love Animal Sanctuary Inc | Abingdon | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Lazy Days Rescue | Perry Hall | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Leap Girl Africa | Springdale | 501(c)(3) | 2026 | |||
| Leaps and Squeaks Animal Rescue Corporation | Frederick | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Leash - Lets End Animal Surrender and Homelessness Inc | Gaithersburg | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Lilys Wild Heart Inc | Lusby | 501(c)(3) | 2025 | |||
| Lisas Ark Critter Rescue Inc | Brandywine | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Little Bitta Farm Inc | Sykesville | 501(c)(3) | 2023 | $1 | 2024-12 | |
| Little Flower Rescue Inc | Parkville | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Lizzys Lodge Inc | Silver Spring | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Lola S Landing Animal Rescue Inc | Rising Sun | 501(c)(3) | 2016 | $0 | $0 | 2023-07 |
| Lost Animal Resource Group Inc | Towson | 501(c)(3) | 2020 | $0 | $0 | 2025-12 |
| Lost Mountain Group | Westminster | 501(c)(3) | 2021 | $0 | $0 | 2023-12 |
| Lost and Found Donkey Rescue Foundation | Germantown | 501(c)(3) | 2022 | $28,032 | 2024-02 | |
| Lotus Medical Care Foundation | Fruitland | 501(c)(3) | 2023 | $0 | $0 | 2023-12 |
| Lotz of Loyalty | Stevensville | 501(c)(3) | 2025 | |||
| Love A Cat Enterprises | Frederick | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Luckys Legacy Inc | Hagerstown | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| Lyons Paw | Bel Air | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| MKT Freedom Feline Rescue Foundation Corp | New Windsor | 501(c)(3) | 2025 | |||
| Mabels Orphaned Angels Rescue | Chesapeak BCH | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Mad Catter Inc | Manchester | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Main Street Cats | Pittsville | 501(c)(3) | 2020 | $0 | $0 | 2026-06 |
| Majesty Rottweiler Rescue | Darlington | 501(c)(3) | 2011 | $0 | $0 | 2025-12 |
| Make Animals Great Again Incorporated | Owings | 501(c)(3) | 2018 | $0 | $0 | 2024-12 |
| Maryland Animal Rescue Foundation | Westminster | 501(c)(3) | 2025 |
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.