Home Organizations Oklahoma Every cause Civil rights and advocacy 66 Environment and climate 173 Labor unions and worker centers 428 Housing and homelessness 311 Immigrant services and rights 24 Food banks and hunger 153 Legal aid 24 Voting and civic participation 19 Community health and reproductive care 61 LGBTQ+ services and rights 9 Criminal justice reform and reentry 39 Civil rights and advocacy (66) Organization City Type Revenue American Civil Liberties Union Of Oklahoma FoundationEIN 73-1003205 · filings Oklahoma City Charity, 501(c)(3) $1.7 million Family Shelter Of So Oklahoma Serv For Victims Of Domestic ViolenceEIN 73-1383235 · filings Ardmore Charity, 501(c)(3) $1.1 million National Association Of Voca Assistance Adminstrators UaEIN 39-2037020 · filings Oklahoma City Charity, 501(c)(3) $978,028 Tulsa Casa IncEIN 73-1312870 · filings Tulsa Charity, 501(c)(3) $740,492 Alliance Of Tribal Coalitions To End ViolenceEIN 46-4028439 · filings Norman Charity, 501(c)(3) $521,330 Oklahoma Observer Democracy FoundationEIN 46-2965135 · filings Edmond Charity, 501(c)(3) $517,214 Court Appointed Special Advocate For Children IncEIN 73-1497371 · filings Muskogee Charity, 501(c)(3) $510,171 Oklahoma Donor Alliance IncEIN 87-2848799 · filings Oklahoma City Charity, 501(c)(3) $471,783 Stronger Together Movement IncEIN 83-2323535 · filings Norman Charity, 501(c)(3) $455,668 Tulsa Lawyers For Children IncEIN 73-1593275 · filings Tulsa Charity, 501(c)(3) $411,710 Casa Of Northeast Oklahoma IncEIN 73-1482426 · filings Claremore Charity, 501(c)(3) $395,715 Casa For Kids IncEIN 73-1396936 · filings Stillwater Charity, 501(c)(3) $395,663
The 66 largest →
Environment and climate (173) Organization City Type Revenue Compatible Lands Foundation IncEIN 27-1693939 · filings Pryor Charity, 501(c)(3) $24.6 million Land LegacyEIN 30-0137741 · filings Tulsa Charity, 501(c)(3) $14.1 million Native Preservation CoEIN 99-3914841 · filings Tulsa Charity, 501(c)(3) $6.6 million Myriad Gardens FoundationEIN 73-1293008 · filings Oklahoma City Charity, 501(c)(3) $6.1 million Oklahoma Centennial Botanical Garden IncEIN 47-0878581 · filings Tulsa Charity, 501(c)(3) $3.1 million Genesis ProjectEIN 73-1153813 · filings Jones Charity, 501(c)(3) $2.7 million Oklahoma Association Of Conservation Districts IncorporateEIN 73-0801393 · filings Oklahoma City Charity, 501(c)(3) $2.4 million Oklahoma City Beautiful IncEIN 73-0785200 · filings Oklahoma City Charity, 501(c)(3) $889,369 Tulsa Garden Center IncEIN 73-6068213 · filings Tulsa Charity, 501(c)(3) $631,479 Waterislife Global IncEIN 93-3658629 · filings Broken Arrow Charity, 501(c)(3) $599,939 Keep Oklahoma Beautiful IncEIN 73-0747023 · filings Oklahoma City Charity, 501(c)(3) $469,018 Lake Mcmurtry Friends IncEIN 45-5191283 · filings Stillwater Charity, 501(c)(3) $430,827
The 173 largest →
Labor unions and worker centers (428) Organization City Type Revenue United Brotherhood Of Carpenters & Joiners Of AmericaEIN 35-0723065 · filings Tulsa Labor organization, 501(c)(5) $124.3 million Carpenters International Training FundEIN 52-6447063 · filings Tulsa Labor organization, 501(c)(5) $54.0 million Transport Workers Union Of AmericaEIN 73-0560463 · filings Tulsa Labor organization, 501(c)(5) $5.2 million Farmers Educational And Cooperative Union Of AmericaEIN 73-0235820 · filings Oklahoma City Labor organization, 501(c)(5) $4.7 million International Brotherhood Of Electrical WorkersEIN 73-0298080 · filings Oklahoma City Labor organization, 501(c)(5) $3.9 million United Association Of Journeymen & Apprentices Of The Plumbing & PipeEIN 73-0467693 · filings Oklahoma City Labor organization, 501(c)(5) $3.6 million International Association Of Machinists & Aerospace WorkersEIN 20-0632147 · filings Enid Labor organization, 501(c)(5) $3.5 million United Brotherhood Of Carpenters & Joiners Of AmericaEIN 27-0324763 · filings Tulsa Labor organization, 501(c)(5) $3.3 million International Brotherhood Of TeamstersEIN 73-0298085 · filings Oklahoma City Labor organization, 501(c)(5) $2.3 million International Union Of Operating Engineers Local 627EIN 73-0451145 · filings Tulsa Labor organization, 501(c)(5) $1.9 million International Association Of Sheet Metal Air Rail & TransportationEIN 73-0490789 · filings Tulsa Labor organization, 501(c)(5) $1.9 million American Federation Of Government EmployeesEIN 73-0738165 · filings Oklahoma City Labor organization, 501(c)(5) $1.7 million
The 300 largest →
Housing and homelessness (311) Organization City Type Revenue Montereau IncEIN 73-1571795 · filings Tulsa Charity, 501(c)(3) $52.0 million Housing For Communities IncEIN 92-3482579 · filings Oklahoma City Charity, 501(c)(3) $21.3 million Habitat For Humanity International IncEIN 73-1325063 · filings Tulsa Charity, 501(c)(3) $19.1 million Smc Equipment IncEIN 83-1342710 · filings Stillwater Charity, 501(c)(3) $16.6 million Homeless AllianceEIN 11-3718005 · filings Oklahoma City Charity, 501(c)(3) $14.8 million Lutheran Senior Citizens IncEIN 73-1032864 · filings Oklahoma City Charity, 501(c)(3) $13.9 million Housing Partners Of Tulsa IncEIN 73-1397452 · filings Tulsa Charity, 501(c)(3) $11.7 million Central Oklahoma Habitat For Humanity IncEIN 73-1305668 · filings Oklahoma City Charity, 501(c)(3) $11.3 million Coal County General HospitalEIN 73-1235996 · filings Coalgate Charity, 501(c)(3) $8.9 million Tulsa Day Center IncEIN 73-1557819 · filings Tulsa Charity, 501(c)(3) $7.6 million Community Enhancement CorporationEIN 73-1221559 · filings Oklahoma City Charity, 501(c)(3) $5.2 million Choctaw Home Finance CorporationEIN 27-0030542 · filings Hugo Charity, 501(c)(3) $4.8 million
The 300 largest →
Immigrant services and rights (24) Organization City Type Revenue Oaks Indian Mission IncEIN 73-0717995 · filings Oaks Charity, 501(c)(3) $1.1 million New Sanctuary Empowerment Center IncEIN 86-2199527 · filings Tulsa Charity, 501(c)(3) $558,175 Hispanic American Mission IncEIN 73-1171905 · filings Okc Charity, 501(c)(3) $432,272 Three Feathers AssociatesEIN 73-1114549 · filings Norman Charity, 501(c)(3) $307,578 Hoina-homes Of The Indian NationEIN 23-2063713 · filings Broken Arrow Charity, 501(c)(3) $202,072 Antioch Bridge Of Life Etc IncEIN 82-3777577 · filings Broken Arrow Charity, 501(c)(3) $177,116 Love Ministries International IncEIN 38-3822008 · filings Coweta Charity, 501(c)(3) $139,590 Messiahs Compassion IncEIN 82-3402916 · filings Shawnee Charity, 501(c)(3) $109,553 International Community MinistriesEIN 46-1338033 · filings Sapulpa Charity, 501(c)(3) $50,730 Ms Senior Oklahoma PageantEIN 27-2918969 · filings Oklahoma City Charity, 501(c)(3) — Community Immigration & Tax Assistance AssociationEIN 33-1936250 · filings Tulsa Charity, 501(c)(3) — Fundacion Lazos LatinosEIN 33-1996310 · filings Warr Acres Charity, 501(c)(3) —
The 24 largest →
Food banks and hunger (153) Organization City Type Revenue Regional Food Bank Of OklahomaEIN 73-1100380 · filings Oklahoma City Charity, 501(c)(3) $121.3 million Community Food Bank Of Eastern Oklahoma IncEIN 73-1184980 · filings Tulsa Charity, 501(c)(3) $61.1 million Hunger Free Oklahoma IncEIN 88-2180580 · filings Tulsa Charity, 501(c)(3) $22.7 million Meals On Wheels Of Metro Tulsa IncEIN 73-1125389 · filings Tulsa Charity, 501(c)(3) $5.1 million Food On The Move IncEIN 84-4256720 · filings Tulsa Charity, 501(c)(3) $5.0 million Project H E A R T IncEIN 73-1199063 · filings Shawnee Charity, 501(c)(3) $4.8 million Feed The Kids IncEIN 99-1006924 · filings Mcalester Charity, 501(c)(3) $4.5 million Feed The Need Foundation For Rural OklahomaEIN 47-1926101 · filings Wright City Charity, 501(c)(3) $4.4 million Community Resourcing IncorporatedEIN 35-2541161 · filings Stillwater Charity, 501(c)(3) $3.7 million Southern Oklahoma Nutrition ProgramEIN 73-0974147 · filings Ada Charity, 501(c)(3) $3.2 million Wheatheart Nutrition Project IncEIN 73-1215398 · filings Blackwell Charity, 501(c)(3) $3.1 million Hands Of Hope IncEIN 73-1400154 · filings Durant Charity, 501(c)(3) $2.6 million
The 153 largest →
Legal aid (24) Organization City Type Revenue Legal Aid Services Of Oklahoma IncEIN 73-1022203 · filings Oklahoma City Charity, 501(c)(3) $28.2 million Oklahoma Bar Foundation IncEIN 73-0710244 · filings Oklahoma City Charity, 501(c)(3) $9.1 million Still She Rises IncEIN 83-0943819 · filings Tulsa Charity, 501(c)(3) $4.3 million Oklahoma Indian Legal Services IncEIN 73-1142462 · filings Oklahoma City Charity, 501(c)(3) $2.4 million Disability Rights Oklahoma IncEIN 73-1025167 · filings Tulsa Charity, 501(c)(3) $2.0 million Casa Of Oklahoma County IncEIN 13-4364692 · filings Oklahoma City Charity, 501(c)(3) $1.5 million Oklahoma Lawyers For Children IncEIN 73-1542815 · filings Oklahoma City Charity, 501(c)(3) $768,480 Oklahoma Alternative Resources IncEIN 73-1487635 · filings Tulsa Charity, 501(c)(3) $710,022 Latitude Legal Alliance IncEIN 93-2034714 · filings Oklahoma City Charity, 501(c)(3) $661,456 Oklahoma Access To Justice FoundationEIN 82-3829850 · filings Oklahoma City Charity, 501(c)(3) $387,073 Trinity Legal Clinic Of Oklahoma IncEIN 56-2630060 · filings Edmond Charity, 501(c)(3) $326,987 Canadian County Casa IncEIN 47-0855453 · filings El Reno Charity, 501(c)(3) $221,936
The 24 largest →
Voting and civic participation (19) Organization City Type Revenue Oklahomans For A Prosperous Future IncEIN 46-5562914 · filings Tulsa Advocacy, 501(c)(4) $290,000 Oklahoma Voter Alliance IncEIN 88-0857914 · filings Oklahoma City Advocacy, 501(c)(4) $271,835 Oklahoma Growth Alliance IncEIN 81-3175973 · filings Oklahoma City Advocacy, 501(c)(4) $161,500 League Of Women Voters Of OklahomaEIN 73-6229597 · filings Oklahoma City Charity, 501(c)(3) $141,876 Lets Fix ThisEIN 81-4056582 · filings Oklahoma City Charity, 501(c)(3) $74,684 American Coalition IncEIN 26-3206532 · filings Tulsa Charity, 501(c)(3) — Freedom Oklahoma Action FundEIN 26-4497248 · filings Oklahoma City Advocacy, 501(c)(4) — Rock The Native Vote IncEIN 33-2514448 · filings Yukon Charity, 501(c)(3) — Carter County Sheriffs PosseEIN 33-4947316 · filings Ardmore Charity, 501(c)(3) — Truth And Substance IncorporatedEIN 39-4486215 · filings Oklahoma City Charity, 501(c)(3) — Owasso Character Council IncEIN 45-2585685 · filings Owasso Charity, 501(c)(3) — Festival Of Angels IncEIN 73-1490010 · filings Ponca City Charity, 501(c)(3) —
The 19 largest →
Community health and reproductive care (61) Organization City Type Revenue Integris Ambulatory Care CorporationEIN 73-1192765 · filings Oklahoma City Charity, 501(c)(3) $339.7 million Warren Clinic IncEIN 73-1310891 · filings Tulsa Charity, 501(c)(3) $238.5 million Variety Care IncEIN 73-1088577 · filings Oklahoma City Charity, 501(c)(3) $117.3 million Central Oklahoma American Indian Health Council IncEIN 73-0955756 · filings Oklahoma City Charity, 501(c)(3) $105.6 million Morton Comprehensive Health Services IncEIN 73-1177858 · filings Tulsa Charity, 501(c)(3) $30.3 million Caring Hands Healthcare Centers IncEIN 20-3587410 · filings Mcalester Charity, 501(c)(3) $24.7 million Great Salt Plains Health Center IncEIN 20-8787477 · filings Cherokee Charity, 501(c)(3) $19.3 million Community Health Centers IncEIN 73-0930123 · filings Spencer Charity, 501(c)(3) $18.0 million Good Shepherd Community Clinic IncEIN 73-1509801 · filings Ardmore Charity, 501(c)(3) $16.4 million East Central Oklahoma Family Health Center IncEIN 74-3088726 · filings Wetumka Charity, 501(c)(3) $7.6 million Pushmataha Family Medical Center IncEIN 56-2446296 · filings Clayton Charity, 501(c)(3) $6.1 million Short Grass Community Health Center IncEIN 30-0564047 · filings Hollis Charity, 501(c)(3) $5.9 million
The 61 largest →
LGBTQ+ services and rights (9) Organization City Type Revenue Freedom Oklahoma Education Campaign LtdEIN 45-5405020 · filings Oklahoma City Charity, 501(c)(3) $310,766 Black Queer TulsaEIN 87-3400812 · filings Tulsa Charity, 501(c)(3) $296,825 Oklahoma City Pride Alliance IncEIN 83-4322636 · filings Oklahoma City Charity, 501(c)(3) $72,335 Payne County Pride AssociationEIN 83-1850769 · filings Stillwater Charity, 501(c)(3) — Equality South FoundationEIN 92-1718098 · filings Oklahoma City Charity, 501(c)(3) — Oklahoma Leather AssociationEIN 92-2376073 · filings Tulsa Charity, 501(c)(3) — Green Country EqualityEIN 92-2633043 · filings Braggs Charity, 501(c)(3) — Safe Place Community Center IncEIN 99-1262078 · filings Edmond Charity, 501(c)(3) — Gender Umbrella Assistance CollectiveEIN 99-2199609 · filings Tulsa Charity, 501(c)(3) —
Criminal justice reform and reentry (39) Organization City Type Revenue Remerge IncEIN 46-4504748 · filings Oklahoma City Charity, 501(c)(3) $10.7 million Oklahoma County Diversion Hub IncEIN 84-2538013 · filings Oklahoma City Charity, 501(c)(3) $7.1 million Pets Helping PeopleEIN 80-0407977 · filings Tulsa Charity, 501(c)(3) $1.4 million Little Light MinistriesEIN 27-2495211 · filings Oklahoma City Charity, 501(c)(3) $1.0 million Criminal Justice And Mercy Ministries Of Oklahoma IncEIN 46-3634553 · filings Oklahoma City Charity, 501(c)(3) $706,065 Actionsteps Counseling IncEIN 26-2322205 · filings Tulsa Charity, 501(c)(3) $682,600 1440 Promise CorporationEIN 99-2288070 · filings Owasso Charity, 501(c)(3) $629,091 Stronger Together Movement IncEIN 83-2323535 · filings Norman Charity, 501(c)(3) $455,668 20th District Division Ii Treatment Court IncEIN 37-1990831 · filings Madill Charity, 501(c)(3) $299,612 Poetic Justice IncorperatedEIN 47-5673816 · filings Tulsa Charity, 501(c)(3) $299,112 Just The BeginningEIN 26-4802076 · filings Tulsa Charity, 501(c)(3) $291,743 Redeeming The Family IncEIN 27-3220448 · filings Oklahoma City Charity, 501(c)(3) $249,895
The 39 largest →
Matched by IRS activity code and listed by the revenue on the organization's latest return. Inclusion is not an endorsement; check an organization's own site and filings before you give. Gifts to 501(c)(4) and 501(c)(5) organizations are not tax-deductible.
Source: IRS Exempt Organizations Business Master File . Updated Nov 9, 2026.