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
- Orion Family Services Inc
EIN 392023114 · Headquarters: MADISON, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Orlando Chapter
EIN 593377368 · Headquarters: Brookfield, WI, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Orlanu Inc
EIN 824924564 · Headquarters: Milwaukee, WI, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orlu Regional Assembly Wisconsin Incorporated
EIN 812975123 · Headquarters: Milwaukee, WI, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orphan Alley Animals in Trust
EIN 391578793 · Headquarters: Gresham, WI, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orphan Animal Rescue & Sanctuary
EIN 263388281 · Headquarters: NEENAH, WI, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Orphan Bright Future International Inc
EIN 832648349 · Headquarters: Milwaukee, WI, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Orphan Kanines Animal Adoption Center Inc
EIN 824626764 · Headquarters: RACINE, WI, US · Animal Related · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Orren W Haulman Fund R59600008
EIN 346514055 · Headquarters: MILWAUKEE, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2011 · Primary form: IRS Form 990
- Orthodontic Manufacturers Assc Inc
EIN 391608032 · Headquarters: Sheboygan, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orthopaedic Foundation Fund Inc
EIN 883752717 · Headquarters: LA CROSSE, WI, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Orthopedic Assistance Overseas Inc
EIN 842170479 · Headquarters: Madison, WI, US · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Orthros Foundation Inc
EIN 814816668 · Headquarters: HUDSON, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- Orville & Laurene Watts Scholarship Fund
EIN 326251524 · Headquarters: MILWAUKEE, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Osborne & Scekic Family Foundation Inc
EIN 611431424 · Headquarters: RACINE, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Oscar & Augusta Schlegel Fdn
EIN 391586544 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Oscar Brask Unit No 185 of the America Legion Aux Dept of Wiscons
EIN 396081514 · Headquarters: Grantsburg, WI, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oscars Rabbit Rescue Inc
EIN 883265713 · Headquarters: MARSHFIELD, WI, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Osceola Area Chamber of Commerce In
EIN 391939758 · Headquarters: OSCEOLA, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Osceola Community Fair Inc
EIN 271743107 · Headquarters: Osceola, WI, US · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Osceola Community Health Foundation Inc
EIN 392029106 · Headquarters: OSCEOLA, WI, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Osceola Education Foundation of Wisconsin Inc
EIN 843765359 · Headquarters: Osceola, WI, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Osceola Historical Society
EIN 391569065 · Headquarters: OSCEOLA, WI, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Osceola Main Street Program
EIN 391939757 · Headquarters: OSCEOLA, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990
- Osceola Rod & Gun Club Inc Demulling
EIN 391223886 · Headquarters: OSCEOLA, WI, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990
- Osceola Senior Citizens Club Inc
EIN 043728244 · Headquarters: Osceola, WI, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Osceola Valley Sno Goers
EIN 391522089 · Headquarters: STAR PRAIRIE, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Osceola Wheels & Wings Inc
EIN 471425580 · Headquarters: OSCEOLA, WI, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Osceola Wrestling Club
EIN 391750162 · Headquarters: Osceola, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Osceola Youth Baseball
EIN 391780217 · Headquarters: OSCEOLA, WI, USA · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Osceola Youth Boys Basketball
EIN 822236740 · Headquarters: Osceola, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Osceola Youth Volleyball
EIN 275380743 · Headquarters: Osceola, WI, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshc Foundation
EIN 043767891 · Headquarters: GRAFTON, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ
- Oshkosh Area Businesses Focused on Health
EIN 472248849 · Headquarters: Neenah, WI, US · Health Care · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Oshkosh Area Community Foundation
EIN 396041638 · Headquarters: OSHKOSH, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2011 · Primary form: IRS Form 990
- Oshkosh Area Community Foundation Corporation
EIN 392034571 · Headquarters: OSHKOSH, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Area Community Pantry Inc
EIN 263714702 · Headquarters: OSHKOSH, WI, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Area Community Property Corporation
EIN 272441813 · Headquarters: OSHKOSH, WI, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Area Economic Development Corporation
EIN 391622920 · Headquarters: OSHKOSH, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Area Humane Society
EIN 391709813 · Headquarters: OSHKOSH, WI, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Area Shrm
EIN 270892686 · Headquarters: Oshkosh, WI, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Oshkosh Area United Way Inc
EIN 391017908 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Area Womens Alliance
EIN 274548869 · Headquarters: Omro, WI, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N
- Oshkosh Area Womens Association Inc
EIN 391857259 · Headquarters: OSHKOSH, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Area Youth Hockey Association LTD
EIN 931508800 · Headquarters: Oshkosh, WI, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oshkosh Basketball Club Inc
EIN 872310958 · Headquarters: OSHKOSH, WI, USA · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-PF
- Oshkosh Benevolent Social Club Inc
EIN 391384745 · Headquarters: Oshkosh, WI, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Central Credit Union
EIN 390875304 · Headquarters: Appleton, WI, USA · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990
- Oshkosh Chamber of Commerce
EIN 930765817 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Chamber of Commerce Foundation Inc
EIN 260015746 · Headquarters: OSHKOSH, WI, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Chamber Singers Incorporated
EIN 391590753 · Headquarters: Oshkosh, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Child Development Center Inc
EIN 824973704 · Headquarters: Neenah, WI, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Comm Ymca Unrestricted
EIN 396084455 · Headquarters: MILWAUKEE, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Oshkosh Community Credit Union
EIN 390919640 · Headquarters: OSHKOSH, WI, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990
- Oshkosh Community News Network Inc
EIN 611459651 · Headquarters: Oshkosh, WI, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Oshkosh Convention & Visitors Bureau Inc
EIN 391845587 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Corporation Foundation Inc
EIN 396062129 · Headquarters: Oshkosh, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Oshkosh Country Club
EIN 390520030 · Headquarters: OSHKOSH, WI, USA · Recreation & Sports · Latest available filing year: 2010 · Primary form: IRS Form 990
- Oshkosh Cultural Arts Coalition Inc
EIN 352610995 · Headquarters: OSHKOSH, WI, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Cycling Club
EIN 473281128 · Headquarters: Oshkosh, WI, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Eagles Football Club
EIN 862912380 · Headquarters: Oshkosh, WI, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Earth Science Club Inc
EIN 391235217 · Headquarters: LARSEN, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Education Association
EIN 237083797 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Family Incorporated
EIN 390806160 · Headquarters: OSHKOSH, WI, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Fine Arts Association Inc
EIN 391230713 · Headquarters: Oshkosh, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Firefighters Charitable Trust
EIN 452488076 · Headquarters: Oshkosh, WI, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Flyers Football Club Inc
EIN 204467764 · Headquarters: OSHKOSH, WI, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oshkosh Football Group Inc
EIN 881797262 · Headquarters: OSHKOSH, WI, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oshkosh Giants Inc
EIN 391348070 · Headquarters: Oshkosh, WI, US · Recreation & Sports · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- Oshkosh Gun Club Inc
EIN 396088383 · Headquarters: Oshkosh, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oshkosh Gymnastic Booster Club Inc
EIN 391414736 · Headquarters: Oshkosh, WI, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Oshkosh Hoops
EIN 831767510 · Headquarters: Winneconne, WI, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Ice Hawks Hockey Boosters Inc
EIN 850949844 · Headquarters: Oshkosh, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Into the Night Inc
EIN 842794186 · Headquarters: Oshkosh, WI, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Kennel Club Inc
EIN 396078547 · Headquarters: OSHKOSH, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Oshkosh Kids Foundation Inc
EIN 842675271 · Headquarters: OSHKOSH, WI, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Kids Museum Inc
EIN 994428444 · Headquarters: OSHKOSH, WI, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Kiwanis Foundation Incorporated
EIN 311578735 · Headquarters: OSHKOSH, WI, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Legion Baseball Association Inc
EIN 202417748 · Headquarters: Oshkosh, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Mid Morning Kiwanis Foundation Inc
EIN 273296813 · Headquarters: OSHKOSH, WI, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Oshkosh North Baseball Inc
EIN 352519992 · Headquarters: Oshkosh, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh North Hoops Club Inc
EIN 311582525 · Headquarters: Neenah, WI, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Northside Hoops Club Inc
EIN 452954921 · Headquarters: Oshkosh, WI, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh on the Water
EIN 391709055 · Headquarters: Oshkosh, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Opportunities Inc
EIN 811706302 · Headquarters: Oshkosh, WI, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Paraprofessional Education Association
EIN 391493600 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Philatelic Society
EIN 364798592 · Headquarters: Kimberly, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Playin Round
EIN 453054709 · Headquarters: Oshkosh, WI, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Oshkosh Police Benevolent Association
EIN 391946434 · Headquarters: OSHKOSH, WI, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Postal Employees Credit Union
EIN 390972029 · Headquarters: NEENAH, WI, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990
- Oshkosh Power Boat Club
EIN 390981448 · Headquarters: Oshkosh, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Pride Inc
EIN 992333480 · Headquarters: Oshkosh, WI, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Oshkosh Professional Police Association
EIN 391459530 · Headquarters: Oshkosh, WI, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Public Museum Auxiliary
EIN 680541373 · Headquarters: Oshkosh, WI, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Racing Pigeon Club
EIN 391461778 · Headquarters: Winnebago, WI, US · Recreation & Sports · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Oshkosh Raptors
EIN 934010762 · Headquarters: Oshkosh, WI, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Rifle & Pistol Club
EIN 396077380 · Headquarters: OSHKOSH, WI, US · Recreation & Sports · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Oshkosh Rugby Football Club Inc
EIN 450536046 · Headquarters: Oshkosh, WI, US · Recreation & Sports · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Oshkosh Safety Council
EIN 471047805 · Headquarters: Oshkosh, WI, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Oshkosh Saturday Farmers Market Inc
EIN 455135065 · Headquarters: OSHKOSH, WI, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ