Nonprofits in Wisconsin

Nonprofits in Wisconsin. Browse 46,682 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. International Kirtan Foundation

    EIN 412165368 · Headquarters: GLENDALE, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  2. International Little Artists Foundation Llc

    EIN 473867547 · Headquarters: LAKE GENEVA, WI, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. International Longshoremens Association

    EIN 390971897 · Headquarters: Superior, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. International Marriage Encounter Inc

    EIN 411394637 · Headquarters: Winnebago, WI, US · Religion Related · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  5. International Melges 15 Class Association Inc

    EIN 873808810 · Headquarters: Zenda, WI, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. International Milk Haulers Association

    EIN 391984990 · Headquarters: WISCONSIN DELLS, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990

  7. International Morab Breeders Association

    EIN 473208373 · Headquarters: Eagle, WI, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  8. International Mountain Bicycling Assoc-capital Off Road Pathfinders

    EIN 271680223 · Headquarters: MADISON, WI, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. International Mountain Bicycling Association

    EIN 454805343 · Headquarters: Wausau, WI, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  10. International Mountain Bicycling Association

    EIN 462158268 · Headquarters: little chute, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. International Nanny Association

    EIN 742603407 · Headquarters: MILWAUKEE, WI, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2022 · Primary form: IRS Form 990

  12. International Network of Empowered Women

    EIN 463219040 · Headquarters: Milwaukee, WI, US · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  13. International News Analysis Institute

    EIN 391953858 · Headquarters: Stoughton, WI, US · Human Services · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  14. International Order of the Kings Daughters & Sons Service Circle

    EIN 396077887 · Headquarters: NEENAH, WI, US · Community Improvement & Capacity Building · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  15. International Outlaw Motorcycle Gang Investigators Assoc

    EIN 020477138 · Headquarters: GERMANTOWN, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  16. International Parents Travel Club

    EIN 455561337 · Headquarters: Racine, WI, US · Education · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  17. International Parkinson and Movement Disorder Society Inc

    EIN 061263827 · Headquarters: MILWAUKEE, WI, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. International Partners for Education Inc

    EIN 204900919 · Headquarters: Madison, WI, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. International Police Association United States Section

    EIN 911995272 · Headquarters: Green Bay, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. International Psychogeriatric Association

    EIN 364181896 · Headquarters: MILWAUKEE, WI, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. International Reading Association Inc

    EIN 237057516 · Headquarters: Eau Claire, WI, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  22. International Reading Association Inc

    EIN 237068334 · Headquarters: Whitewater, WI, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  23. International Reading Association Inc

    EIN 391238933 · Headquarters: Kenosha, WI, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  24. International Reading Association Inc

    EIN 391383090 · Headquarters: Wausaukee, WI, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  25. International Reading Association Inc

    EIN 391661855 · Headquarters: Shawano, WI, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  26. International Reading Association Inc

    EIN 391705614 · Headquarters: Brussels, WI, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  27. International Reading Association Inc

    EIN 800161988 · Headquarters: Marengo, WI, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  28. International Renegade Pigs Motorcycle Club Inc

    EIN 472858481 · Headquarters: New Berlin, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. International Right of Way Association

    EIN 911935481 · Headquarters: Tomahawk, WI, US · International, Foreign Affairs & National Security · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  30. International Ship Masters Assoc

    EIN 237584760 · Headquarters: Sheboygan, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. International Sidereal Astrology Association

    EIN 334290513 · Headquarters: Green Bay, WI, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. International Silo Association

    EIN 610491239 · Headquarters: THORP, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. International Snowmobile Hall of Fame

    EIN 411724063 · Headquarters: Mosinee, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. International Snowmobile Racing Hall of Fame Inc

    EIN 391547859 · Headquarters: SAINT GERMAIN, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. International Society for Anaesthetic Pharmacology

    EIN 363629362 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. International Society for Animal Clinical Pathology

    EIN 680417786 · Headquarters: WINDSOR, WI, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. International Society for Business Education USA Chapter

    EIN 853961337 · Headquarters: Oconomowoc, WI, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. International Society for Extracellular Vesicles

    EIN 462263206 · Headquarters: Milwaukee, WI, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. International Society for Music Education

    EIN 921914647 · Headquarters: KENOSHA, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. International Society for Otitis Media

    EIN 461500334 · Headquarters: MILWAUKEE, WI, USA · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990

  41. International Society for Quality of Life Research

    EIN 541985637 · Headquarters: MILWAUKEE, WI, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. International Society for Sports Psychiatry

    EIN 391757802 · Headquarters: SUN PRAIRIE, WI, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. International Society for the Study of Vascular Anomalies

    EIN 464900421 · Headquarters: MILWAUKEE, WI, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. International Society of Automation

    EIN 396094335 · Headquarters: Lena, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  45. International Society of Biometeorology

    EIN 541034113 · Headquarters: SHOREWOOD, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. International Society of Certified Employee Benefit Specialist Inc

    EIN 432050291 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. International Society of Certified Employee Benefit Specialists

    EIN 391396077 · Headquarters: BROOKFIELD, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. International Society of Certified Employee Benefit Specialists Inc

    EIN 232830830 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. International Society of Certified Employee Benefit Specialists Inc

    EIN 311311299 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. International Society of Certified Employee Benefit Specialists Inc

    EIN 382955317 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. International Society of Certified Employee Benefit Specialists Inc

    EIN 383370858 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. International Society of Certified Employee Benefit Specialists Inc

    EIN 391498307 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. International Society of Certified Employee Benefit Specialists Inc

    EIN 391781060 · Headquarters: Madison, WI, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  54. International Society of Certified Employee Benefit Specialists Inc

    EIN 421423581 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. International Society of Certified Employee Benefit Specialists Inc

    EIN 521703865 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. International Society of Certified Employee Benefit Specialists Inc

    EIN 611305952 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. International Society of Certified Employee Benefit Specialists Inc

    EIN 631100347 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. International Society of Interventional Neurology Inc

    EIN 300506439 · Headquarters: hudson, WI, US · Mental Health & Crisis Intervention · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  59. International Society of Ocular Oncology Co Krystal Crowe

    EIN 593788740 · Headquarters: FREMONT, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990

  60. International Society of Plant Molecular Biology Inc

    EIN 521199045 · Headquarters: Madison, WI, US · Science & Technology · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  61. International Society of Psychiatric-mental Health Nurses

    EIN 362905672 · Headquarters: WINDSOR, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. International Symposium on Fireworks Society Ltd

    EIN 824342644 · Headquarters: WHITEFISH BAY, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. International Theological Seminary Inc

    EIN 820978746 · Headquarters: Sheboygan, WI, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. International Training in Communication

    EIN 710888504 · Headquarters: Butler, WI, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  65. International Transplant Nurses Society

    EIN 392072514 · Headquarters: Madison, WI, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. International Transplant Skin Cancer Collaborative

    EIN 431964114 · Headquarters: MILWAUKEE, WI, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  67. International Union Brewery Workers Local 9 UAW

    EIN 390181777 · Headquarters: Milwaukee, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  68. International Union IBEW Local Union 953

    EIN 390367741 · Headquarters: Eau Claire, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. International Union INTERNAL BROHD ELECT WKRS LOCAL 2150

    EIN 391031359 · Headquarters: Menomonee Falls, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. International Union INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS LOCAL 2

    EIN 396063261 · Headquarters: Madison, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  71. International Union International Union United

    EIN 391409567 · Headquarters: St Point, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  72. International Union of Bricklayers 6Bac Local Wisconsin

    EIN 390986627 · Headquarters: Merrill, WI, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. International Union of Bricklayers and Allied Craftworkers

    EIN 237065966 · Headquarters: Chippewa Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. International Union of Bricklayers and Allied Craftworkers

    EIN 237228762 · Headquarters: New Berlin, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. International Union of Bricklayers and Allied Craftworkers

    EIN 390181984 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. International Union of Bricklayers and Allied Craftworkers

    EIN 390260968 · Headquarters: Sheboygan, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. International Union of Bricklayers and Allied Craftworkers

    EIN 390478318 · Headquarters: New Berlin, WI, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. International Union of Bricklayers and Allied Craftworkers

    EIN 391092227 · Headquarters: Chippewa Falls, WI, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. International Union of Bricklayers and Allied Craftworkers

    EIN 391147212 · Headquarters: Chippewa Falls, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. International Union of Bricklayers and Allied Craftworkers

    EIN 391430128 · Headquarters: Kaukauna, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. International Union of Bricklayers and Allied Craftworkers

    EIN 391674722 · Headquarters: New Berlin, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. International Union of Bricklayers and Allied Craftworkers

    EIN 396049924 · Headquarters: Watertown, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. International Union of Bricklayers and Allied Craftworkers

    EIN 396056481 · Headquarters: BELOIT, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. International Union of Bricklayers and Allied Craftworkers

    EIN 396075565 · Headquarters: GREEN BAY, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. International Union of Bricklayers and Allied Craftworkers

    EIN 611561004 · Headquarters: Pardeeville, WI, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. International Union of Bricklayers and Allied Craftworkers Local 8

    EIN 390368023 · Headquarters: NEW BERLIN, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  87. International Union of Elevator Constructors

    EIN 390368051 · Headquarters: NEW BERLIN, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  88. International Union of Elevator Constructors

    EIN 396078696 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  89. International Union of Operating

    EIN 390368029 · Headquarters: GREEN BAY, WI, USA · Employment · Latest available filing year: 2010 · Primary form: IRS Form 990

  90. International Union of Operating

    EIN 396076310 · Headquarters: MILWAUKEE, WI, USA · Employment · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  91. International Union of Painters and Allied Trades

    EIN 383292682 · Headquarters: BIG BEND, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. International Union of Painters and Allied Trades

    EIN 390184594 · Headquarters: BIG BEND, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. International Union of Painters and Allied Trades

    EIN 390367744 · Headquarters: BIG BEND, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. International Union of Painters and Allied Trades

    EIN 390615135 · Headquarters: BIG BEND, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. International Union of Painters and Allied Trades

    EIN 390809616 · Headquarters: BIG BEND, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. International Union of Painters and Allied Trades

    EIN 390989839 · Headquarters: BIG BEND, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. International Union of Painters and Allied Trades

    EIN 396075890 · Headquarters: BIG BEND, WI, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. International Union of Painters and Allied Trades Local Union 1204

    EIN 390666607 · Headquarters: KENOSHA, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. International Union of Soil Sciences Inc

    EIN 461007367 · Headquarters: Madison, WI, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. International Union UAW

    EIN 396007586 · Headquarters: Milwaukee, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

First page and all pages