A river running through a deep pine forest valley

Cause EnvironmentState Wisconsin302 funders

Foundations that fund environment in Wisconsin

302 private foundations based in Wisconsin with a return in the last two years gave $16 million to environment organizations in 868 grants. The median grant was $5,000, and 124 of these foundations accept applications.

Foundations with a return in the last two years, each by its latest return (tax years 2023 to 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

Ranked by giving to environment

Top 50

Grants in each foundation’s latest return to organizations whose IRS category is environment.

  1. The Argosy FoundationMilwaukee, WI · tax year 2024 25 grants Preselected only $2,396,000 to environment
  2. Dwight and Linda Davis FoundationWausau, WI · tax year 2024 3 grants Preselected only $1,017,000 to environment
  3. The Brookby FoundationMilwaukee, WI · tax year 2024 27 grants Accepts applications $995,633 to environment
  4. Sally Mead Hands FoundationMadison, WI · tax year 2025 13 grants Preselected only $860,500 to environment
  5. Pleasant T Rowland Foundation IncBrookfield, WI · tax year 2025 7 grants Accepts applications $803,000 to environment
  6. Judd S Alexander FoundationWausau, WI · tax year 2024 1 grant Accepts applications $750,000 to environment
  7. Nicholas Family Foundation TrustMequon, WI · tax year 2025 2 grants Accepts applications $505,000 to environment
  8. Reed Family Foundation IncLake Geneva, WI · tax year 2025 25 grants Preselected only $485,000 to environment
  9. Wm Collins Kohler Foundation IncMilwaukee, WI · tax year 2024 4 grants Preselected only $355,000 to environment
  10. 1923 FundMilwaukee, WI · tax year 2024 3 grants Preselected only $325,000 to environment
  11. The Afognak FundFox Point, WI · tax year 2025 5 grants Preselected only $315,000 to environment
  12. ANTONIA FOUNDATION INCco F MICHAEL ARNOWMilwaukee, WI · tax year 2025 5 grants Accepts applications $280,000 to environment
  13. Rockwell Automation Charitable CorpMilwaukee, WI · tax year 2024 4 grants Accepts applications $275,000 to environment
  14. MRB Foundation IncLake Geneva, WI · tax year 2025 16 grants Preselected only $272,000 to environment
  15. Herbert H Kohl Charities IncMilwaukee, WI · tax year 2024 7 grants Preselected only $190,500 to environment
  16. John C Bock FoundationPickett, WI · tax year 2024 15 grants Accepts applications $166,000 to environment
  17. The Searle Freedom TrustMadison, WI · tax year 2024 2 grants Preselected only $165,000 to environment
  18. Crum FBO National Tropical Botanical GardenMilwaukee, WI · tax year 2024 1 grant Preselected only $164,734 to environment
  19. Crum FBO Hawaii Tropical Botanic GardenMilwaukee, WI · tax year 2024 1 grant Preselected only $164,533 to environment
  20. Phoebe R & John D Lewis FoundationGreen Bay, WI · tax year 2025 8 grants Preselected only $160,000 to environment
  21. The Lori and David Nicholas Family Foundation IncMequon, WI · tax year 2025 6 grants Accepts applications $160,000 to environment
  22. Alliant Energy Foundation IncMadison, WI · tax year 2025 32 grants Accepts applications $150,755 to environment
  23. The Lubar Family Foundation IncMilwaukee, WI · tax year 2024 1 grant Preselected only $150,000 to environment
  24. Rhizomium FoundationBarneveld, WI · tax year 2025 2 grants Preselected only $150,000 to environment
  25. TRP Shawe FndatnMilwaukee, WI · tax year 2024 5 grants Accepts applications $148,000 to environment
  26. David V Uihlein Foundation David Uihlein Racing Museum FoundationMilwaukee, WI · tax year 2025 4 grants Preselected only $140,000 to environment
  27. Ruth St John & John Dunham West Foundation IncManitowoc, WI · tax year 2025 2 grants Accepts applications $116,500 to environment
  28. Exacto Foundation IncGrafton, WI · tax year 2024 1 grant Preselected only $100,000 to environment
  29. Hej Field Foundation IncStockholm, WI · tax year 2025 1 grant Preselected only $100,000 to environment
  30. US Ventureschmidt Family FoundationAppleton, WI · tax year 2024 4 grants Accepts applications $90,000 to environment
  31. Aylward Family FoundationAppleton, WI · tax year 2024 2 grants Accepts applications $90,000 to environment
  32. Jenni & Kyle Foundation IncBelleville, WI · tax year 2025 2 grants Preselected only $85,500 to environment
  33. Madison Gas and Electric Foundation IncMadison, WI · tax year 2024 10 grants Accepts applications $85,266 to environment
  34. The Musser FundMilwaukee, WI · tax year 2024 8 grants Accepts applications $82,000 to environment
  35. Rose E Tucker Charitable TrustMilwaukee, WI · tax year 2024 7 grants Accepts applications $74,000 to environment
  36. Evergreen Foundation IncNeenah, WI · tax year 2025 6 grants Preselected only $70,500 to environment
  37. Richard and Ethel Herzfeld Foundation IncMilwaukee, WI · tax year 2024 2 grants Accepts applications $70,000 to environment
  38. Prairie Springs Paul Fleckenstein Charitable TrustMilwaukee, WI · tax year 2025 3 grants Accepts applications $65,236 to environment
  39. Holzinger Memorial Foundation 4915009523Waukesha, WI · tax year 2025 1 grant Preselected only $65,126 to environment
  40. Helios FoundationNeenah, WI · tax year 2024 7 grants Accepts applications $60,500 to environment
  41. Reiman Foundation IncPewaukee, WI · tax year 2024 6 grants Preselected only $60,000 to environment
  42. Schlecht Family Foundation IncWaunakee, WI · tax year 2025 4 grants Preselected only $60,000 to environment
  43. Couillard Solar Foundation IncDeerfield, WI · tax year 2024 1 grant Preselected only $60,000 to environment
  44. Betty Lewis Environmental Charitable TrustAppleton, WI · tax year 2025 16 grants Preselected only $57,109 to environment
  45. James E Dutton Foundation IncMerrill, WI · tax year 2025 9 grants Accepts applications $56,078 to environment
  46. The Galaxy Foundation IncHartland, WI · tax year 2025 11 grants Preselected only $54,200 to environment
  47. Maihaugen Foundation Inc Agency XXXXXX2262La Crosse, WI · tax year 2025 5 grants Accepts applications $52,500 to environment
  48. The Lynde and Harry Bradley Foundation IncMilwaukee, WI · tax year 2024 2 grants Accepts applications $52,500 to environment
  49. Hauske Family Foundation IncMilwaukee, WI · tax year 2024 4 grants Accepts applications $52,000 to environment
  50. Donald Weesner Charitable TR UAMilwaukee, WI · tax year 2024 1 grant Preselected only $51,000 to environment

Open to applications

25 foundations

The return gives an application contact and does not check the preselected-only box.

  1. The Brookby FoundationMilwaukee, WI · tax year 2024 27 grants Accepts applications $995,633 to environment
  2. Pleasant T Rowland Foundation IncBrookfield, WI · tax year 2025 7 grants Accepts applications $803,000 to environment
  3. Judd S Alexander FoundationWausau, WI · tax year 2024 1 grant Accepts applications $750,000 to environment
  4. Nicholas Family Foundation TrustMequon, WI · tax year 2025 2 grants Accepts applications $505,000 to environment
  5. ANTONIA FOUNDATION INCco F MICHAEL ARNOWMilwaukee, WI · tax year 2025 5 grants Accepts applications $280,000 to environment
  6. Rockwell Automation Charitable CorpMilwaukee, WI · tax year 2024 4 grants Accepts applications $275,000 to environment
  7. John C Bock FoundationPickett, WI · tax year 2024 15 grants Accepts applications $166,000 to environment
  8. The Lori and David Nicholas Family Foundation IncMequon, WI · tax year 2025 6 grants Accepts applications $160,000 to environment
  9. Alliant Energy Foundation IncMadison, WI · tax year 2025 32 grants Accepts applications $150,755 to environment
  10. TRP Shawe FndatnMilwaukee, WI · tax year 2024 5 grants Accepts applications $148,000 to environment
  11. Ruth St John & John Dunham West Foundation IncManitowoc, WI · tax year 2025 2 grants Accepts applications $116,500 to environment
  12. US Ventureschmidt Family FoundationAppleton, WI · tax year 2024 4 grants Accepts applications $90,000 to environment
  13. Aylward Family FoundationAppleton, WI · tax year 2024 2 grants Accepts applications $90,000 to environment
  14. Madison Gas and Electric Foundation IncMadison, WI · tax year 2024 10 grants Accepts applications $85,266 to environment
  15. The Musser FundMilwaukee, WI · tax year 2024 8 grants Accepts applications $82,000 to environment
  16. Rose E Tucker Charitable TrustMilwaukee, WI · tax year 2024 7 grants Accepts applications $74,000 to environment
  17. Richard and Ethel Herzfeld Foundation IncMilwaukee, WI · tax year 2024 2 grants Accepts applications $70,000 to environment
  18. Prairie Springs Paul Fleckenstein Charitable TrustMilwaukee, WI · tax year 2025 3 grants Accepts applications $65,236 to environment
  19. Helios FoundationNeenah, WI · tax year 2024 7 grants Accepts applications $60,500 to environment
  20. James E Dutton Foundation IncMerrill, WI · tax year 2025 9 grants Accepts applications $56,078 to environment
  21. Maihaugen Foundation Inc Agency XXXXXX2262La Crosse, WI · tax year 2025 5 grants Accepts applications $52,500 to environment
  22. The Lynde and Harry Bradley Foundation IncMilwaukee, WI · tax year 2024 2 grants Accepts applications $52,500 to environment
  23. Hauske Family Foundation IncMilwaukee, WI · tax year 2024 4 grants Accepts applications $52,000 to environment
  24. Bitker Gould Family Charitable FoundationLac Du Flambeau, WI · tax year 2025 2 grants Accepts applications $51,000 to environment
  25. The Jackson FoundationMilwaukee, WI · tax year 2024 9 grants Accepts applications $43,000 to environment