| University of Wisconsin Foundation | 501(c)(3) | 1943 | $680.9 million | $6.32 billion | 2025-06 |
| Wisconsin Alumni Research Foundation | 501(c)(3) | 1935 | $189.3 million | $3.43 billion | 2025-06 |
| Ascendium Education Solutions Inc | 501(c)(3) | 1997 | $186 million | $213.3 million | 2025-12 |
| Ascendium Education Group Inc | 501(c)(3) | 1967 | $118.1 million | $3.92 billion | 2025-12 |
| Edgewood University Inc | 501(c)(3) | 1946 | $68.9 million | $162.7 million | 2025-06 |
| University Research Park Inc | 501(c)(3) | 1985 | $38.2 million | $231 million | 2024-12 |
| Wisconsin Association of Independent Colleges and Universit | 501(c)(3) | 1975 | $8.3 million | $27.3 million | 2025-06 |
| Madison Area Technical College Foundation Inc | 501(c)(3) | 1973 | $6.8 million | $27.2 million | 2025-06 |
| Wisconsin Manufacturing Extension Partnership Inc | 501(c)(3) | 2016 | $6.7 million | $3.4 million | 2024-12 |
| Wisconsin Center for Manufacturing and Productivity Inc | 501(c)(3) | 1995 | $6.1 million | $1.8 million | 2025-12 |
| Madison Public Library Foundation Inc | 501(c)(3) | 1994 | $5.6 million | $17.5 million | 2025-12 |
| World Dairy Expo Inc | 501(c)(3) | 1993 | $5.3 million | $16.8 million | 2025-12 |
| Playing Field Inc | 501(c)(3) | 2015 | $5 million | $7.4 million | 2025-08 |
| Preschool of the Arts Inc | 501(c)(3) | 1975 | $4.7 million | $4.9 million | 2025-08 |
| Isthmus Montessori Academy Inc | 501(c)(3) | 2013 | $3.8 million | $4.2 million | 2025-07 |
| Saint Ambrose Academy | 501(c)(3) | 2003 | $3.6 million | $14.2 million | 2025-06 |
| Wingra School Inc | 501(c)(3) | 1972 | $3.5 million | $6.1 million | 2025-06 |
| Literacy Network Inc | 501(c)(3) | 1976 | $3 million | $5.1 million | 2025-12 |
| Wisys Technology Foundation Inc | 501(c)(3) | 2001 | $2.6 million | $3.2 million | 2025-06 |
| Abundant Life Christian Schoolfoundation Inc | 501(c)(3) | 2008 | $2.5 million | $4.1 million | 2025-06 |
| Charis Classical Academy Incorporated | 501(c)(3) | 2013 | $2.2 million | $4.8 million | 2025-06 |
| Madison Public Schools Foundation Inc | 501(c)(3) | 2002 | $2 million | $13.9 million | 2024-12 |
| Foundation of the Wisconsin Automobile & Truck Dealers Assoc | 501(c)(3) | 1992 | $1.8 million | $9.9 million | 2025-12 |
| Woodland Montessori School Inc | 501(c)(3) | 1974 | $1.7 million | $2.4 million | 2025-08 |
| Madison Community Cooperative | 501(c)(3) | 1995 | $1.5 million | $4.4 million | 2025-05 |
| Wisconsin Technical College System Foundation Inc | 501(c)(3) | 1978 | $1.5 million | $7.8 million | 2025-06 |
| Leading Change Inc | 501(c)(3) | 2015 | $1.3 million | $759,756 | 2025-06 |
| I P M Institute of North America Inc | 501(c)(3) | 2001 | $1.3 million | $418,546 | 2024-12 |
| Forward Together Wisconsin Co | 501(c)(3) | 2023 | $1.3 million | $265,148 | 2025-05 |
| Hometown Education Foundation Inc | 501(c)(3) | 2005 | $1.1 million | $1.7 million | 2025-12 |
| Meeting House Nursery School Inc | 501(c)(3) | 1975 | $1.1 million | $1.5 million | 2025-06 |
| Wisconsin Association of School Personnel Administrators | 501(c)(3) | 2010 | $1 million | $1.9 million | 2025-06 |
| Gay Straight Alliance for Safeschools Incorporated | 501(c)(3) | 2006 | $1 million | $654,532 | 2025-06 |
| Madison Waldorf School LTD | 501(c)(3) | 2009 | $918,864 | $349,100 | 2025-06 |
| Kelab Inc | 501(c)(3) | 1970 | $904,069 | $23 million | 2025-12 |
| The Institute for the Advancement of Breastfeeding and Lactation Edu | 501(c)(3) | 2014 | $820,315 | $749,764 | 2024-12 |
| Horizon High School of Madison Inc | 501(c)(3) | 2005 | $813,370 | $496,560 | 2024-12 |
| Greater Madison Chamber of Commerce Foundation Inc | 501(c)(3) | 1999 | $744,698 | $833,202 | 2025-12 |
| Center for Healthcare Education and Simulation Inc | 501(c)(3) | 2010 | $664,408 | $1.3 million | 2025-06 |
| Feller School | 501(c)(3) | 2020 | $646,184 | $623,009 | 2025-06 |
| Madison Montessori Society Inc | 501(c)(3) | 1966 | $643,238 | $453,617 | 2025-08 |
| Wisconsin Alliance for Excellent Schools Inc | 501(c)(3) | 2019 | $638,380 | $206,626 | 2025-06 |
| Tenney Nursery and Parent Center Inc | 501(c)(3) | 1981 | $627,499 | $560,731 | 2025-05 |
| Ceos of Tomorrow Inc | 501(c)(3) | 2016 | $526,908 | $302,845 | 2024-12 |
| Wisconsin Institute for Learning Disabilites Dyslexia Inc | 501(c)(3) | 2006 | $500,750 | $265,536 | 2025-08 |
| Divine Mercy Academy Inc | 501(c)(3) | 2022 | $470,485 | $45,047 | 2025-06 |
| WMC Litigation Center | 501(c)(3) | 2012 | $464,923 | $175,397 | 2025-12 |
| 100 Black Men of Madison Inc | 501(c)(3) | 1996 | $457,359 | $315,638 | 2024-12 |
| Friends of the Uw Odyssey Project Inc | 501(c)(3) | 2010 | $431,660 | $271,996 | 2025-06 |
| Creek Day School Incorporation | 501(c)(3) | 1975 | $423,879 | $152,176 | 2025-12 |
| Wea Member Benefits Foundation Inc | 501(c)(3) | 2019 | $389,189 | $610,746 | 2025-12 |
| Jump in Foundation Inc | 501(c)(3) | 2018 | $376,263 | $1.4 million | 2024-12 |
| Wisconsin School Administrators Alliance Inc | 501(c)(4) | 2017 | $372,187 | $172,781 | 2025-06 |
| Fair Opportunity Project | 501(c)(3) | 2017 | $356,108 | $38,667 | 2025-05 |
| Root To Rise Inc | 501(c)(3) | 2020 | $343,540 | $66,040 | 2024-12 |
| Dream Bikes Inc | 501(c)(3) | 2008 | $320,734 | $157,616 | 2024-12 |
| Asset Builders of America Inc | 501(c)(3) | 2001 | $313,915 | $806,707 | 2025-12 |
| Wisconsin Association of School Council Inc | 501(c)(3) | 1985 | $312,861 | $92,656 | 2024-08 |
| Wisconsin Troopers Benevolent Foundation | 501(c)(3) | 2012 | $300,169 | $183,969 | 2024-12 |
| French House Incorporated | 501(c)(3) | 1937 | $295,716 | $965,637 | 2025-05 |
| Sigma Delta Tau Society | 501(c)(7) | 1948 | $268,892 | $118,391 | 2025-06 |
| Wisconsin Credit Union Foundationinc | 501(c)(3) | 2008 | $266,625 | $920,713 | 2025-12 |
| Center for Advanced Academics | 501(c)(3) | 2020 | $245,450 | $63,699 | 2025-06 |
| American Academy of Cosmetic Dentistry Charitable Foundation | 501(c)(3) | 1995 | $222,109 | $1 million | 2025-10 |
| Wisconsin Agc Construction Education Foundation Inc | 501(c)(3) | 1993 | $212,596 | $568,461 | 2025-12 |
| Kappa Beta Gamma International Inc | 501(c)(7) | 2016 | $208,667 | $464,038 | 2026-06 |
| Wisconsin Pharmacy Foundation Inc | 501(c)(3) | 1997 | $207,784 | $1.5 million | 2024-12 |
| WFB Foundation Supporting Organization Inc | 501(c)(3) | 2012 | $179,792 | $1.7 million | 2025-09 |
| Wisconsin Organization of Nurse Executives Inc | 501(c)(3) | 1995 | $168,707 | $275,847 | 2025-12 |
| Badger Basketball Boosters Inc | 501(c)(3) | 1997 | $168,298 | $124,915 | 2025-06 |
| Human Computer Interaction Consortium | 501(c)(3) | 2019 | $165,179 | $134,412 | 2025-12 |
| The Wisconsin Union Association Inc | 501(c)(3) | 1925 | $158,794 | $105,601 | 2025-06 |
| Fitzmaurice Institute Inc | 501(c)(3) | 2018 | $152,490 | $172,355 | 2025-12 |
| Mid Atlantic Association of Ib World Schools | 501(c)(3) | 2007 | $144,804 | $85,571 | 2026-06 |
| Hickory Hill Academy Parent Advisory Board Inc | 501(c)(3) | 2021 | $142,912 | $9,167 | 2025-12 |
| Agc of Wisconsin Training Trust Fund | 501(c)(3) | 2010 | $135,797 | $16,079 | 2025-12 |
| Babcock House Corp | 501(c)(3) | 2002 | $134,506 | $517,108 | 2025-12 |
| Wisconsin Mason Apprenticeship and Training Fund | 501(c)(3) | 2002 | $133,312 | $643,890 | 2025-05 |
| Triangle Fraternity National Council | 501(c)(7) | 1940 | $123,865 | $55,181 | 2025-06 |
| Women in Focus Incorporated | 501(c)(3) | 2002 | $110,352 | $302,547 | 2025-08 |
| Galin Scholars Inc | 501(c)(3) | 2023 | $108,031 | $39,411 | 2024-12 |
| Van Hise Parent Teacher Organization Inc | 501(c)(3) | 2006 | $107,416 | $63,010 | 2025-06 |
| Academy for Surgical Coaching Inc | 501(c)(3) | 2020 | $104,650 | $20,322 | 2025-09 |
| Blessed Sacrament School Endowment Fund Inc | 501(c)(3) | 1987 | $103,989 | $2.1 million | 2025-12 |
| Wisconsin Education Association Professional Development Academy I | 501(c)(3) | 1996 | $100,530 | $185,030 | 2025-08 |
| Wisconsin Civil Justice Education Foundation Inc | 501(c)(3) | 2002 | $97,404 | $548,148 | 2024-12 |
| Wisconsin Coalition On Student Loan Debt Inc | 501(c)(3) | 2022 | $96,230 | $67,353 | 2025-12 |
| Wisconsin Progress Institute Inc | 501(c)(3) | 2015 | $91,252 | $126,661 | 2025-12 |
| Wisconsin Women in Government Inc | 501(c)(3) | 1992 | $85,958 | $80,304 | 2025-09 |
| West Athletic Boosters Inc | 501(c)(3) | 2001 | $84,714 | $162,830 | 2025-07 |
| Friends of Sequoya Branch Library Inc | 501(c)(3) | 2009 | $84,287 | $115,945 | 2025-12 |
| Memorial Spartans Athletics Booster Club | 501(c)(3) | 2023 | $82,512 | $68,186 | 2025-06 |
| Participatory Learning and Teaching Organization Inc | 501(c)(3) | 2014 | $77,265 | $265,669 | 2025-06 |
| Music Teachers National Association Inc | 501(c)(3) | 1999 | $77,002 | $163,570 | 2025-06 |
| Wisconsin Center for Performance Excellence Inc | 501(c)(3) | 2000 | $70,720 | $32,771 | 2025-12 |
| Door of Hope Ministries Inc | 501(c)(3) | 2019 | $69,701 | $77,137 | 2025-08 |
| Lafollette Booster Club | 501(c)(3) | 2013 | $69,579 | $94,673 | 2025-06 |
| University League Inc | 501(c)(3) | 1981 | $65,383 | $42,074 | 2025-05 |
| Franklin-Randall Parent Teacher Organization Inc | 501(c)(3) | 2005 | $65,236 | $98,701 | 2026-06 |
| Sidekick Education Inc | 501(c)(3) | 2019 | $61,723 | $25,042 | 2025-12 |
| Society for Quantitative Ethnography Inc | 501(c)(3) | 2019 | $55,427 | $74,352 | 2025-12 |
| Family Farm Defenders Inc | 501(c)(3) | 1996 | $55,211 | $103,762 | 2024-12 |
| Cambodian School Project | 501(c)(3) | 2004 | $54,274 | $39,747 | 2025-12 |
| Real Estate Club at University of Wisconsin | 501(c)(3) | 2019 | $51,948 | $41,319 | 2025-12 |
| Shorewood Hills Elementary School Pto Inc | 501(c)(3) | 2010 | $41,989 | $28,183 | 2025-06 |
| Thoreau Elementary Pto Inc | 501(c)(3) | 2011 | $35,497 | $17,609 | 2026-07 |
| Alano Society Inc | 501(c)(3) | 2014 | $28,568 | $119,489 | 2025-12 |
| South Central Library System Foundation Inc | 501(c)(3) | 2006 | $26,087 | $8.9 million | 2025-12 |
| Western Fraternal Life Association Education & Charitable Foundation | 501(c)(3) | 2006 | $25,236 | $151,857 | 2022-12 |
| Joseph P Mettner Foundation Inc | 501(c)(3) | 2010 | $9,567 | $697,888 | 2024-12 |
| Hart Beat Education Foundation Inc | 501(c)(3) | 2025 | $4,469 | $2,759 | 2025-12 |
| Wfra Foundation Inc | 501(c)(3) | 2008 | $3,444 | $110,855 | 2024-12 |
| Minnesota Cooperative Education Foundation | 501(c)(3) | 1987 | $2,111 | $165,161 | 2025-06 |
| Positive Attitude Development Group Inc | 501(c)(3) | 2015 | $2,007 | $72 | 2025-12 |
| Earth Science Womens Network Inc | 501(c)(3) | 2014 | $1,869 | $25,813 | 2024-12 |
| Sieg Foundation | 501(c)(3) | 2001 | $236 | $112,204 | 2024-12 |
| International Field Directors and Technologies Incorporated | 501(c)(3) | 2015 | $5 | $45,706 | 2025-12 |
| Active Learning Connection Inc | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Aldo Leopold School Parent Faculty | 501(c)(3) | 1989 | $0 | $0 | 2026-06 |
| Alpha Kappa Chapter of Zeta Beta Tau Fraternity Inc | 501(c)(7) | 2025 | $0 | $0 | 2025-12 |
| Alpha Phi Omega | 501(c)(3) | 1966 | $0 | $0 | 2025-12 |
| Alpha Sigma Phi Fraternity Inc | 501(c)(7) | 1941 | $0 | $0 | 2025-06 |
| American Society of Civil Engineers Uw-Madison Concrete Canoe Team | 501(c)(3) | 2025 | | | |
| Anana Elementary Pto | 501(c)(3) | 2018 | $0 | $0 | 2025-06 |
| Arthur and Joan Dolohanty Dietrich Foundation Corp | 501(c)(3) | 2002 | | $16,777 | 2025-12 |
| Association of Latino Professionals for America at Uw-Madison | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Athalie Ann Van Vonderen Family Foundation Inc | 501(c)(3) | 2026 | | $16,554 | 2025-12 |
| Awa African Womens Association Incorporated | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Ayurveda Association of Wisconsin Inc | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Beale Foundation Inc | 501(c)(3) | 2019 | | $117,728 | 2025-12 |
| Beta Epsilon of Kappa Sigma Educational Foundation Inc | 501(c)(3) | 1996 | $0 | $0 | 2026-05 |
| Black Hawk Middle School Parent Teacher Organization | 501(c)(3) | 2024 | $0 | $0 | 2025-07 |
| Booker Washington Institute -Bwi Class of 1987 Inc | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Books Are Power Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Breaking Cycles Guatemala Inc | 501(c)(3) | 2026 | | | |
| Bruce Dahmen Foundation | 501(c)(3) | 2020 | $0 | $0 | 2025-11 |
| Build Happiness Inc | 501(c)(3) | 2026 | | | |
| Byte Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-08 |
| CJS Foundation Inc | 501(c)(3) | 2006 | $0 | $0 | 2025-12 |
| Cape Palmas High School Alumni Association-Usa | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Carter G Woodson Scholarship and Community Service Foundation Inc | 501(c)(3) | 1994 | $0 | $0 | 2025-10 |
| Chavez School Pto | 501(c)(3) | 2016 | $0 | $0 | 2025-08 |
| Cherokee Middle School Parent-Teacher Association | 501(c)(3) | 2015 | $0 | $0 | 2026-07 |
| Children S Voice Inc | 501(c)(3) | 2019 | $0 | $0 | 2025-12 |
| College Goal Wisconsin | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Communication Champions Club Co | 501(c)(3) | 2025 | $0 | $0 | 2025-07 |
| Conrad A Elvehjem School Pto | 501(c)(3) | 2016 | $0 | $0 | 2026-07 |
| Crestwood Association of Parents &TEACHERS Inc | 501(c)(3) | 2006 | $0 | $0 | 2025-06 |
| Culinary History Enthusiasts of Wisconsin | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Dane County New Horizons Music Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Defy Inertia Inc | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Design Interactive | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Devine Family Foundation Inc | 501(c)(3) | 1999 | | $626,121 | 2025-12 |
| Diachronica Inc | 501(c)(3) | 2014 | $0 | $0 | 2025-12 |
| Discovering Freedom Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-03 |
| Eastside Lakers Blue Line Club Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-06 |
| Edgewood High School | 501(c)(3) | 2014 | | | |
| Educators Co Work Flex Inc | 501(c)(3) | 2023 | $0 | $0 | 2025-12 |
| Emerson Elementary Parent Teacher Organization Incorporated | 501(c)(3) | 2015 | $0 | $0 | 2026-06 |
| Fair Indigo Foundation Inc | 501(c)(3) | 2007 | | $19,929 | 2025-12 |
| Families Back To the Table Inc | 501(c)(3) | 2026 | | | |
| Friends of Badger Rock Middle School | 501(c)(3) | 2016 | $0 | $0 | 2026-06 |
| Friends of Greater Orfordville Area Library LTD | 501(c)(3) | 2011 | $0 | $0 | 2026-04 |
| Friends of Holy Rosary School Inc | 501(c)(3) | 2016 | | | |
| Friends of Lake Wingra Inc | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Friends of Madison Lakeview Library Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Friends of Madison Student Radio Inc | 501(c)(3) | 2000 | $0 | $0 | 2026-06 |
| Friends of Pinney Branch Library Incorporated | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Friends of Ravens Ark Primary School | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Friends of Sanchez Scholars | 501(c)(3) | 2017 | $0 | $0 | 2026-06 |
| Friends of Shabazz | 501(c)(3) | 2025 | | | |
| Friends of St Charles Borromeo School Inc | 501(c)(3) | 2015 | | | |
| Friends of St James School Inc | 501(c)(3) | 2016 | | | |
| Friends of St John the Baptist School Inc | 501(c)(3) | 2019 | | | |
| Friends of St Patrick School Inc | 501(c)(3) | 2016 | | | |
| Friends of St William School | 501(c)(3) | 2017 | | | |
| Friends of West Inc | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Friends of Wiscares Inc | 501(c)(3) | 2021 | $0 | $0 | 2025-06 |
| Friends of the Alicia Ashman Branch Library Inc | 501(c)(3) | 1999 | $0 | $0 | 2025-12 |
| Friends of the Dane County Farmers Market Inc | 501(c)(3) | 2004 | | | |
| Gamma Gamma Gamma Chapter | 501(c)(7) | 2018 | $0 | $0 | 2024-10 |
| German School of Madison-Deutsche Schule Madison Inc | 501(c)(3) | 2015 | $0 | $0 | 2025-06 |
| Glenn W Stephens Parent Teacher Organization Inc | 501(c)(3) | 2010 | $0 | $0 | 2024-07 |
| Goldenrod Montessori Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Gompers Elementary Parent Teacher Organization Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-06 |
| Hawthorne Elementary Parent Teacher Association | 501(c)(3) | 2017 | $0 | $0 | 2024-06 |
| Henderson Elementary School PLT Inc | 501(c)(3) | 2020 | $0 | $0 | 2026-06 |
| Hill Family of Madison Wisconsin Properties Non-Profit Co | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Honor Society of Phi Kappa Phi | 501(c)(3) | 1999 | $0 | $0 | 2026-06 |
| Huegel Elementary Pto Inc | 501(c)(3) | 2015 | $0 | $0 | 2025-06 |
| Independent String Teachers of Madison Inc | 501(c)(3) | 2006 | $0 | $0 | 2025-06 |
| Indore Youth Education Inc | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| International Association of Woodanatomists | 501(c)(3) | 2008 | $0 | $0 | 2025-12 |
| Its All About Love Academy | 501(c)(3) | 2026 | | | |
| JFMJ Academy | 501(c)(3) | 2019 | $0 | $0 | 2025-09 |
| JMM Band Boosters Inc | 501(c)(3) | 2019 | $0 | $0 | 2026-07 |
| Jefferson Pto Madison | 501(c)(3) | 2022 | $0 | $0 | 2025-07 |
| John N Graber Irrev Scholarship Trust | 501(c)(3) | 1996 | | $82,153 | 2025-10 |
| John Nkemnji | 501(c)(3) | 2024 | | $1 | 2025-12 |
| Kappa Alpha Psi Fraternity | 501(c)(7) | 2014 | $0 | $0 | 2025-09 |
| Karen S Helton Memorial Scholarship for Aspiring Teachers | 501(c)(3) | 2025 | | | |
| Kennedy Elementary Pto Inc | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Kennedy Family Support Network | 501(c)(3) | 2026 | | | |
| Key & Scepter Society Inc | 501(c)(3) | 2013 | $0 | $0 | 2025-12 |
| Keys To Travel A Keith J Kreps Foundation Inc | 501(c)(3) | 2014 | $0 | $0 | 2024-12 |
| Kind Lesli Ann Ambassadors | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Lacrosse Education Association | 501(c)(5) | 1971 | $0 | $0 | 2025-08 |
| Lafollette HS Class of 1982 | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Lighthouse Education Foundation Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-06 |
| Madinah Academy of Madison | 501(c)(3) | 2011 | | | |
| Madison Committee On Foreign Relations Inc | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Madison East High School Purgolder Boosters | 501(c)(3) | 2001 | $0 | $0 | 2026-04 |
| Madison Russian School Inc | 501(c)(3) | 2017 | $0 | $0 | 2025-08 |
| Madison Sports Hall of Fame Inc | 501(c)(3) | 2005 | $0 | $0 | 2026-07 |
| Mann Educational Opportunity Fund Inc | 501(c)(3) | 1993 | $0 | $0 | 2025-12 |
| Marquette-Lapham Parent Teacher Group Inc | 501(c)(3) | 1996 | $0 | $0 | 2026-05 |
| Mendota Scholar and Teacher Support | 501(c)(3) | 2025 | | | |
| Midvale Lincoln Parent Teacher Organization Inc | 501(c)(3) | 2010 | $0 | $0 | 2025-08 |
| Misol Wisconsin | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Mother Edith Charity Foundation Inc | 501(c)(3) | 2024 | $0 | $0 | 2024-12 |
| Music Teachers National Association Inc | 501(c)(3) | 1999 | $0 | $0 | 2024-12 |
| My P R O C E S S Incorporated | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| National Association of Teachers of Singing Inc | 501(c)(3) | 2009 | $0 | $0 | 2025-12 |
| Natural Circles of Support Inc | 501(c)(3) | 2025 | | | |
| Nsbe - Wisconsin Black Engineering Student Society | 501(c)(3) | 2026 | | | |
| Nyaake Township Development Associa Tion | 501(c)(3) | 2026 | | | |
| Okeeffe Middle School Parent-Teacher Group Inc | 501(c)(3) | 2014 | $0 | $0 | 2026-06 |
| Orchard Ridge Elementary School Pto | 501(c)(3) | 2008 | $0 | $0 | 2025-06 |
| Papa Papa Papa Corporation | 501(c)(3) | 2021 | $0 | $0 | 2023-12 |
| Penn State Alumni Association | 501(c)(3) | 2001 | $0 | $0 | 2026-06 |
| Phoenix Force Inc | 501(c)(3) | 2026 | | | |
| Pre-Veterinary Association | 501(c)(3) | 2016 | | $3,891 | 2025-12 |
| Project 1808 Inc | 501(c)(3) | 2013 | $0 | $0 | 2024-12 |
| Reading With Miss Chan Inc | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| Regent Innovators & Student Entrepreneurs Inc | 501(c)(3) | 2025 | | | |
| Richard Davis Foundation for Young Bassists Inc | 501(c)(3) | 1995 | $0 | $0 | 2025-12 |
| Rick and Jackie Symdon Family Foundation | 501(c)(3) | 2025 | | | |
| Russian Educational Association | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Sally J Schnarr Foundation Inc | 501(c)(3) | 2019 | | $10,525 | 2025-12 |
| Schenk Elementary Pto | 501(c)(3) | 2012 | $0 | $0 | 2025-06 |
| Senegambia Women Association Inc | 501(c)(3) | 2025 | | | |
| Sexuality Resources LTD | 501(c)(3) | 2007 | $0 | $0 | 2025-12 |
| Sherman Middle School Parent Teacher Organization | 501(c)(3) | 2024 | $0 | $0 | 2026-06 |
| Signschool Inc | 501(c)(3) | 2015 | $0 | $0 | 2026-06 |
| Society for Ming Studies | 501(c)(3) | 2021 | $0 | $0 | 2025-12 |
| Spring Harbor Middle School Parent Teacher Organization Inc | 501(c)(3) | 2018 | $0 | $0 | 2026-08 |
| Stempowerment Coaching Inc | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Sua Foundation Inc | 501(c)(3) | 2007 | | $19,215 | 2026-06 |
| The Aralina & Frank Depolo Foundation | 501(c)(3) | 2015 | | $359,033 | 2025-12 |
| The@college of Osteopathic Medicine Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Together in Unity Foundation | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| United International Friends for Zimbabwe | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
| University of Wisconsin Black Law Students Association | 501(c)(3) | 2019 | $0 | $0 | 2023-04 |
| Velma Hamilton Parent Teacher Organization | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Wave Inc | 501(c)(3) | 1982 | | | |
| Wisconsin Ai Safety Initiative LTD | 501(c)(3) | 2025 | $0 | $0 | 2026-05 |
| Wisconsin Association of DV Interve Ntion Professionals Inc | 501(c)(3) | 2025 | $0 | $0 | 2026-07 |
| Wisconsin Association of International Educators Inc | 501(c)(3) | 2016 | $0 | $0 | 2026-06 |
| Wisconsin College Learning Center Association Inc | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Wisconsin Pottery Association | 501(c)(3) | 1997 | $0 | $0 | 2025-12 |
| Wisconsin Public Interest Law Foundation Inc | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Wisconsin School Psychologists Association Education Fund | 501(c)(3) | 2022 | $0 | $0 | 2023-06 |
| Wisconsin Section of the American Water Resources Association Inc | 501(c)(3) | 2017 | $0 | $0 | 2025-12 |
| Wisconsin Soybean Foundation Inc | 501(c)(3) | 2026 | | | |
| Women in Aviation International | 501(c)(3) | 2003 | $0 | $0 | 2025-09 |
| Women in Entrepreneurship - Uw Bba Leadership & Engagement | 501(c)(3) | 2026 | | | |
| Wsba Foundation Inc | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |