Unknown & Unclassified nonprofits in Wisconsin

Unknown & Unclassified nonprofits in Wisconsin. Browse 13,737 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 ASSOCIATION OF LIONS CLUBS Thiensville-Mequon Lions Club

    EIN 391184491 · Headquarters: Thiensville, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. International Association of Lions Wales-genesee

    EIN 237280645 · Headquarters: Genesee Depot, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  3. International Association of Lions Williams Bay

    EIN 396093897 · Headquarters: WILLIAMS BAY, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. International Association of Lions- Gillett Lions Club

    EIN 390676265 · Headquarters: Gillett, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. International Association of Machinists & Aerospace Workers

    EIN 200663492 · Headquarters: New Holstein, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  6. International Association of Machinists & Aerospace Workers

    EIN 390139994 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. International Association of Machinists & Aerospace Workers

    EIN 390275813 · Headquarters: Lacrosse, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  8. International Association of Machinists & Aerospace Workers

    EIN 390367688 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  9. International Association of Machinists & Aerospace Workers

    EIN 390367699 · Headquarters: Waukesha, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  10. International Association of Machinists & Aerospace Workers

    EIN 390741897 · Headquarters: Iron Ridge, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. International Association of Machinists & Aerospace Workers

    EIN 390757546 · Headquarters: Waupun, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. International Association of Machinists & Aerospace Workers

    EIN 390791588 · Headquarters: Milwakee, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. International Association of Machinists & Aerospace Workers

    EIN 390804126 · Headquarters: Fond du Lac, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  14. International Association of Machinists & Aerospace Workers

    EIN 390841902 · Headquarters: Cambridge, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  15. International Association of Machinists & Aerospace Workers

    EIN 390849781 · Headquarters: Wisconsin Rapids, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. International Association of Machinists & Aerospace Workers

    EIN 390902025 · Headquarters: HORICON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. International Association of Machinists & Aerospace Workers

    EIN 390931038 · Headquarters: JANESVILLE, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. International Association of Machinists & Aerospace Workers

    EIN 391081221 · Headquarters: Waukesha, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  19. International Association of Machinists & Aerospace Workers

    EIN 391096843 · Headquarters: Iron Ridge, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. International Association of Machinists & Aerospace Workers

    EIN 391217194 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. International Association of Machinists & Aerospace Workers

    EIN 391394145 · Headquarters: La Crosse, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. International Association of Machinists & Aerospace Workers

    EIN 391599960 · Headquarters: Cudahy, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. International Association of Machinists & Aerospace Workers

    EIN 391688803 · Headquarters: La Crosse, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  24. International Association of Machinists & Aerospace Workers

    EIN 391865403 · Headquarters: Eagle, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. International Association of Machinists & Aerospace Workers

    EIN 396063974 · Headquarters: Horicon, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  26. International Association of Machinists & Aerospace Workers

    EIN 396076003 · Headquarters: La Crosse, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. International Association of Machinists & Aerospace Workers

    EIN 396076021 · Headquarters: Tomahawk, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. International Association of Machinists & Aerospace Workers

    EIN 396076440 · Headquarters: NEENAH, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. International Association of Machinists & Aerospace Workers

    EIN 396076467 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. International Association of Machinists & Aerospace Workers

    EIN 396078677 · Headquarters: Beaver Dam, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. International Association of Machinists & Aerospace Workers

    EIN 396096708 · Headquarters: WISCONSIN RAPIDS, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. International Association of Machinists & Aerospace Workers

    EIN 396106315 · Headquarters: Reedsburg, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. International Association of Machinists & Aerospace Workers

    EIN 510160703 · Headquarters: Appleton, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. International Association of Sheet Metal Air Rail & Transportation

    EIN 396081070 · Headquarters: GORDON, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. International Association of Structural Movers Inc

    EIN 581559400 · Headquarters: NEENAH, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  36. International Assoviation of Lions Clubs

    EIN 863908114 · Headquarters: Wisconsin Rapids, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. International Bible Mission Inc

    EIN 237447907 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. International Bonhoeffer Society

    EIN 222512569 · Headquarters: Oneida, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  39. International Brotherhd - Boilrmkrs Ir Shp Bldrs Blcksmth Frgrs & Hlpr

    EIN 396078211 · Headquarters: DePere, WI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  40. International Brotherhood of Boiler

    EIN 391025489 · Headquarters: CUDAHY, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  41. International Brotherhood of Boiler Makers Iron Ship Builders Blacksm

    EIN 390517882 · Headquarters: BROOKFIELD, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. International Brotherhood of Boilermakers Local487

    EIN 300960631 · Headquarters: two rivers, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  43. International Brotherhood of Electrical Workers

    EIN 390968909 · Headquarters: MUKWONAGO, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. International Brotherhood of Electrical Workers - 0014 Local

    EIN 391761679 · Headquarters: FALL CREEK, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. International Brotherhood of Electrical Workers Local 388

    EIN 391210824 · Headquarters: STEVENS POINT, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  46. International Brotherhood of Electrical Workers Local 430

    EIN 390855434 · Headquarters: RACINE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. International Brotherhood of Electrical Workers Local 577

    EIN 390918437 · Headquarters: APPLETON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  48. International Brotherhood of Electrical Workers Local Union 127

    EIN 390944715 · Headquarters: KENOSHA, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. International Brotherhood of Electrical Workers Local Union 965

    EIN 390141345 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. International Brotherhood of Teamsters Joint Council 39

    EIN 390140155 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. International Brotherhood of Teamsters Local Union No 200

    EIN 390301593 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  52. International Brotherhood of Teamsters Local Union No 695

    EIN 390859252 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. International Brotherhood-local 696

    EIN 391148721 · Headquarters: MARINETTE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. International Catholic Deaf Assn

    EIN 396127538 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. International Center for Community Land Trusts Inc

    EIN 843858933 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. International Chapter - Young Presidents Organization Inc

    EIN 133539309 · Headquarters: Hartland, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. International Children's Fund

    EIN 391303430 · Headquarters: Neenah, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. International Council for Media Literacy

    EIN 391079981 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. International Dairy-deli-bakery Association

    EIN 391097841 · Headquarters: MADISON, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. International Dyslexia Association

    EIN 391503088 · Headquarters: Oconomowoc, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. International Federation of Professional & Technical Engineers

    EIN 396086794 · Headquarters: CUDAHY, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  62. International Federation of Professional & Technical Engineers

    EIN 911781377 · Headquarters: West Allis, WI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  63. International Longshoremens Association

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

  64. International Morab Breeders Association

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

  65. International Mountain Bicycling Association

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

  66. 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

  67. 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

  68. International Ship Masters Assoc

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

  69. International Silo Association

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

  70. 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

  71. International Society for Anaesthetic Pharmacology

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

  72. International Society of Automation

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

  73. 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

  74. 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

  75. 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

  76. 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

  77. 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

  78. 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

  79. 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

  80. 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

  81. 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

  82. 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

  83. 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

  84. 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

  85. 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

  86. 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

  87. 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

  88. 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

  89. 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

  90. 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

  91. 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

  92. 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

  93. 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

  94. 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

  95. 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

  96. 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

  97. 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

  98. 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

  99. 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

  100. International Union of Elevator Constructors

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

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