Home Organizations Ohio Every cause Civil rights and advocacy 275 Environment and climate 716 Labor unions and worker centers 2,232 Housing and homelessness 1,201 Immigrant services and rights 77 Food banks and hunger 480 Legal aid 36 Voting and civic participation 85 Community health and reproductive care 143 LGBTQ+ services and rights 53 Criminal justice reform and reentry 119 Civil rights and advocacy (275) Organization City Type Revenue ProkidsEIN 31-1020021 · filings Cincinnati Charity, 501(c)(3) $13.0 million Ohio Organizing CampaignEIN 26-3064170 · filings Youngstown Advocacy, 501(c)(4) $10.8 million Center For Christian VirtueEIN 31-1075684 · filings Columbus Charity, 501(c)(3) $6.5 million Ohio Disability Rights Law And Policy Center IncEIN 45-4122935 · filings Columbus Charity, 501(c)(3) $6.2 million Red Wine & BlueEIN 84-4355156 · filings Cleveland Advocacy, 501(c)(4) $6.0 million Assembly For The ArtsEIN 34-1936190 · filings Cleveland Charity, 501(c)(3) $5.2 million Ohio Network Of Childrens Advocacy CentersEIN 01-0688897 · filings Columbus Charity, 501(c)(3) $3.5 million American Policy RoundtableEIN 34-1188989 · filings Strongsville Charity, 501(c)(3) $2.4 million Lesbian Gay Bisexual & Transgender Comn Ctr Of Greater ClevelandEIN 34-1190920 · filings Cleveland Charity, 501(c)(3) $2.4 million Equality Ohio Education FundEIN 02-0743268 · filings Columbus Charity, 501(c)(3) $1.8 million Save Our Children Of Elyria IncEIN 31-1547340 · filings Elyria Charity, 501(c)(3) $1.7 million State Power Action FundEIN 85-4015096 · filings Youngstown Advocacy, 501(c)(4) $1.5 million
The 275 largest →
Environment and climate (716) Organization City Type Revenue Western Reserve Land ConservancyEIN 34-1571233 · filings Moreland Hls Charity, 501(c)(3) $32.0 million Institute For Energy Economics And Financial Analysis IncEIN 45-4244605 · filings Valley City Charity, 501(c)(3) $15.1 million Holden Arboretum TrustEIN 34-6919291 · filings Brooklyn Charity, 501(c)(3) $14.4 million West Creek ConservancyEIN 34-1859064 · filings Parma Charity, 501(c)(3) $13.9 million Cincinnati Nature Center AssociationEIN 31-6057978 · filings Milford Charity, 501(c)(3) $10.8 million Holden ArboretumEIN 34-0750346 · filings Kirtland Charity, 501(c)(3) $10.6 million Southern Ohio Diversification InitiativeEIN 31-1566951 · filings Piketon Charity, 501(c)(3) $9.5 million Cleveland Botanical GardenEIN 34-0239538 · filings Cleveland Charity, 501(c)(3) $9.2 million Appalachia Ohio AllianceEIN 32-0004421 · filings Columbus Charity, 501(c)(3) $7.7 million Conservancy For Cuyahoga Valley National ParkEIN 34-1917257 · filings Peninsula Charity, 501(c)(3) $6.3 million Cardinal Land Conservancy IncEIN 31-1673211 · filings Loveland Charity, 501(c)(3) $6.0 million Columbus Region Green FundEIN 87-2293624 · filings Columbus Charity, 501(c)(3) $5.7 million
The 300 largest →
Labor unions and worker centers (2,232) Organization City Type Revenue Brotherhood Of Locomotive Engineers And TrainmenEIN 23-7381451 · filings Independence Labor organization, 501(c)(5) $58.7 million International Union Of Operating Engineers 18EIN 34-0200322 · filings Cleveland Labor organization, 501(c)(5) $35.9 million Ohio Farm Bureau Federation IncEIN 31-4369470 · filings Columbus Labor organization, 501(c)(5) $21.7 million Brotherhood Of Locomotive Engineers & TrainmenEIN 34-6000349 · filings Independence Labor organization, 501(c)(5) $19.6 million American Federation Of State County & Municipal EmployeesEIN 31-6044189 · filings Westerville Labor organization, 501(c)(5) $18.1 million Service Employees International UnionEIN 55-0603480 · filings Columbus Labor organization, 501(c)(5) $15.8 million United Food And Commercial Workers International UnionEIN 31-0621221 · filings Dayton Labor organization, 501(c)(5) $15.3 million American Federation Of State County & Municipal EmployeesEIN 31-0603474 · filings Worthington Labor organization, 501(c)(5) $14.2 million International Association Of Sheet Metal Air Rail & TransportationEIN 34-1568581 · filings Cleveland Labor organization, 501(c)(5) $13.4 million International Brotherhood Of Electrical WorkersEIN 31-4308416 · filings Columbus Labor organization, 501(c)(5) $12.2 million Laborers International Union Of North AmericaEIN 31-4229654 · filings Westerville Labor organization, 501(c)(5) $11.9 million United Food And Commercial Workers International UnionEIN 34-0815295 · filings Broadview Hts Labor organization, 501(c)(5) $11.2 million
The 300 largest →
Housing and homelessness (1,201) Organization City Type Revenue National Church ResidencesEIN 31-0651750 · filings Columbus Charity, 501(c)(3) $113.4 million Chn Housing PartnersEIN 34-1346763 · filings Cleveland Charity, 501(c)(3) $57.3 million Emerald Development And EconomicEIN 34-1667990 · filings Cleveland Charity, 501(c)(3) $56.3 million Colonial Senior Services IncEIN 31-1596262 · filings Hamilton Charity, 501(c)(3) $51.8 million Ohio Capital Corporation For HousingEIN 31-1265570 · filings Columbus Charity, 501(c)(3) $44.5 million The Ohio Masonic HomeEIN 90-0054759 · filings Springfield Charity, 501(c)(3) $42.4 million Twin LakesEIN 31-1708926 · filings Montgomery Charity, 501(c)(3) $40.2 million Blanchard Valley Continuing Care ServicesEIN 34-6006904 · filings Findlay Charity, 501(c)(3) $38.7 million St LeonardEIN 34-1940863 · filings Centerville Charity, 501(c)(3) $36.0 million First Community VillageEIN 31-0655502 · filings Columbus Charity, 501(c)(3) $34.2 million Willow Brook Christian ServicesEIN 20-0996799 · filings Delaware Charity, 501(c)(3) $30.5 million Wesleyan Senior Care IncEIN 83-4710426 · filings Elyria Charity, 501(c)(3) $28.5 million
The 300 largest →
Immigrant services and rights (77) Organization City Type Revenue Community Refugee And Immigration Services IncEIN 31-1674893 · filings Columbus Charity, 501(c)(3) $9.9 million Asian Services In Action IncEIN 34-1798850 · filings Akron Charity, 501(c)(3) $8.3 million Somali Education And Resource CenterEIN 80-0879429 · filings Columbus Charity, 501(c)(3) $7.1 million International Institute Of Akron IncEIN 34-0733161 · filings Akron Charity, 501(c)(3) $5.3 million Us Together IncEIN 83-0395108 · filings Columbus Charity, 501(c)(3) $4.1 million Resource ClevelandEIN 30-0594051 · filings Cleveland Charity, 501(c)(3) $3.7 million Global ClevelandEIN 27-5245539 · filings Cleveland Charity, 501(c)(3) $1.7 million El Centro De Servicios Sociales IncEIN 34-1165756 · filings Lorain Charity, 501(c)(3) $1.4 million Somali Community Link IncEIN 85-2912800 · filings Columbus Charity, 501(c)(3) $763,122 RefugeeconnectEIN 82-4193107 · filings Cincinnati Charity, 501(c)(3) $657,163 Partnership For Good HealthEIN 88-3376894 · filings Cleveland Charity, 501(c)(3) $561,746 Hispanic Ministries Of Tuscarawas County IncEIN 31-1555846 · filings Canton Charity, 501(c)(3) $528,712
The 77 largest →
Food banks and hunger (480) Organization City Type Revenue Greater Cleveland Food Bank IncEIN 34-1292848 · filings Cleveland Charity, 501(c)(3) $99.2 million Freestore-foodbank IncEIN 23-7122205 · filings Cincinnati Charity, 501(c)(3) $87.6 million Akron-canton Regional FoodbankEIN 34-1369388 · filings Akron Charity, 501(c)(3) $77.8 million Ohio Association Of FoodbanksEIN 34-1677838 · filings Columbus Charity, 501(c)(3) $50.0 million Foodbank IncEIN 86-1082880 · filings Dayton Charity, 501(c)(3) $36.0 million Lifecare AllianceEIN 31-4379494 · filings Columbus Charity, 501(c)(3) $25.2 million Second Harvest Foodbank Of North Central OhioEIN 34-1446685 · filings Lorain Charity, 501(c)(3) $23.0 million Second Harvest Foodbank Of The Mahoning ValleyEIN 34-1380074 · filings Youngstown Charity, 501(c)(3) $22.0 million Toledo Northwestern Ohio Foodbank IncEIN 34-1441016 · filings Toledo Charity, 501(c)(3) $14.4 million West Ohio Food BankEIN 34-1587528 · filings Lima Charity, 501(c)(3) $13.8 million Hunger Network Of Greater ClevelandEIN 34-1810545 · filings Cleveland Charity, 501(c)(3) $13.6 million Last Mile Food RescueEIN 83-4495745 · filings Cincinnati Charity, 501(c)(3) $13.2 million
The 300 largest →
Legal aid (36) Organization City Type Revenue Legal Aid Of Southeast And Central OhioEIN 31-0718185 · filings Columbus Charity, 501(c)(3) $23.7 million Ohio Access To Justice FoundationEIN 46-4044686 · filings Columbus Charity, 501(c)(3) $19.0 million Community Legal Aid Services IncEIN 34-0753560 · filings Akron Charity, 501(c)(3) $11.9 million Legal Aid Of Western Ohio IncEIN 34-1485732 · filings Toledo Charity, 501(c)(3) $9.0 million Legal Defender Office Of Summit County Ohio IncEIN 34-1912461 · filings Akron Charity, 501(c)(3) $6.0 million Student Legal Services IncEIN 31-1682787 · filings Perrysburg Charity, 501(c)(3) $3.1 million Pro Bono Partnership Of OhioEIN 46-4283169 · filings Cincinnati Charity, 501(c)(3) $2.4 million Immigrant And Refugee Law CenterEIN 82-2744813 · filings Cincinnati Charity, 501(c)(3) $1.5 million Ohio Legal HelpEIN 83-0571864 · filings Columbus Charity, 501(c)(3) $1.2 million Union County Criminal Defense LawyersEIN 31-1580535 · filings Marysville Charity, 501(c)(3) $609,168 Legalworks IncEIN 38-3984750 · filings Cleveland Charity, 501(c)(3) $608,010 Gallia County Defense Attorney CorpEIN 81-4815166 · filings Gallipolis Charity, 501(c)(3) $486,000
The 36 largest →
Voting and civic participation (85) Organization City Type Revenue Ohio Organizing CampaignEIN 26-3064170 · filings Youngstown Advocacy, 501(c)(4) $10.8 million The Ohio Organzing CollaborativeEIN 26-1601472 · filings Youngstown Charity, 501(c)(3) $10.0 million Red Wine & BlueEIN 84-4355156 · filings Cleveland Advocacy, 501(c)(4) $6.0 million Ohioans For A Healthy Economy IncEIN 82-2814507 · filings Columbus Advocacy, 501(c)(4) $5.8 million Ohio VoiceEIN 82-3381404 · filings Columbus Charity, 501(c)(3) $4.9 million American Policy RoundtableEIN 34-1188989 · filings Strongsville Charity, 501(c)(3) $2.4 million Good Knights IncEIN 85-1470144 · filings Wellington Charity, 501(c)(3) $1.6 million RuralorganizingorgEIN 82-5040665 · filings Columbus Advocacy, 501(c)(4) $769,036 League Of Women Voters Of Ohio Education FundEIN 31-1050638 · filings Columbus Charity, 501(c)(3) $648,313 Black Leadership Organizing CollaborativeEIN 81-0824161 · filings Akron Advocacy, 501(c)(4) $321,342 American Freedom Builders IncEIN 46-2679662 · filings Columbus Advocacy, 501(c)(4) $266,500 League Of Women Voters Of The Cincinnati Area Education FundEIN 31-6030294 · filings Cincinnati Charity, 501(c)(3) $197,247
The 85 largest →
Community health and reproductive care (143) Organization City Type Revenue Marietta Health Care Physicians IncEIN 31-1375125 · filings Marietta Charity, 501(c)(3) $203.5 million Health Partners Of Western OhioEIN 56-2330309 · filings Lima Charity, 501(c)(3) $90.4 million Community Health Associates IncEIN 34-1784017 · filings Galion Charity, 501(c)(3) $66.3 million Five Rivers Health CentersEIN 45-0914398 · filings Dayton Charity, 501(c)(3) $56.6 million Licking Memorial Health ProfessionalsEIN 31-1425530 · filings Newark Charity, 501(c)(3) $54.2 million Family Health Services Of Darke County IncEIN 34-1119524 · filings Greenville Charity, 501(c)(3) $49.4 million Planned Parenthood Of Greater OhioEIN 34-1015976 · filings Akron Charity, 501(c)(3) $37.6 million Columbus Neighborhood Health Center IncEIN 31-1533908 · filings Columbus Charity, 501(c)(3) $36.7 million Neighborhood Health Care IncorporatedEIN 34-1300581 · filings Cleveland Charity, 501(c)(3) $29.8 million Lower Lights Christian Health Center IncEIN 31-1810355 · filings Columbus Charity, 501(c)(3) $29.5 million Bethesda Healthcare IncEIN 31-1027660 · filings Cincinnati Charity, 501(c)(3) $26.6 million Chmc Community Health Services NetworkEIN 31-1459815 · filings Cincinnati Charity, 501(c)(3) $25.7 million
The 143 largest →
LGBTQ+ services and rights (53) Organization City Type Revenue Lesbian Gay Bisexual & Transgender Comn Ctr Of Greater ClevelandEIN 34-1190920 · filings Cleveland Charity, 501(c)(3) $2.4 million Equality Ohio Education FundEIN 02-0743268 · filings Columbus Charity, 501(c)(3) $1.8 million The Open And Affirming Coalition Of The United Church Of ChristEIN 41-1494786 · filings Cleveland Charity, 501(c)(3) $287,049 Equality OhioEIN 02-0743270 · filings Columbus Advocacy, 501(c)(4) $147,448 Lgbt Housing InitiatveEIN 84-2525726 · filings Westlake Charity, 501(c)(3) $78,890 Equality SanduskyEIN 33-3135408 · filings Sandusky Charity, 501(c)(3) $73,328 Lgbtq Lake CountyEIN 83-4587459 · filings Painesville Charity, 501(c)(3) $69,966 Pride YoungstownEIN 26-3634729 · filings Youngstown Charity, 501(c)(3) — Oea Glbt CaucusEIN 27-3551255 · filings Columbus Advocacy, 501(c)(4) — TransohioEIN 27-5363107 · filings Cleveland Charity, 501(c)(3) — Marsha P Johnson InstituteEIN 33-1340429 · filings Columbus Charity, 501(c)(3) — Safe To TrainEIN 33-4985108 · filings Toledo Charity, 501(c)(3) —
The 53 largest →
Criminal justice reform and reentry (119) Organization City Type Revenue Oriana House IncEIN 34-1334919 · filings Akron Charity, 501(c)(3) $73.3 million Assembly For The ArtsEIN 34-1936190 · filings Cleveland Charity, 501(c)(3) $5.2 million Momentum Advisory CollectiveEIN 84-2723840 · filings West Chester Charity, 501(c)(3) $3.6 million Crime Victim Services IncEIN 34-1437473 · filings Lima Charity, 501(c)(3) $2.7 million Victory ProjectEIN 26-2243366 · filings Dayton Charity, 501(c)(3) $2.3 million Truly Reaching YouEIN 75-3223368 · filings Akron Charity, 501(c)(3) $2.2 million Stark County T A S C IncEIN 34-1865348 · filings Canton Charity, 501(c)(3) $2.0 million Ohio Bird SanctuaryEIN 34-1691325 · filings Mansfield Charity, 501(c)(3) $1.4 million True Freedom IncEIN 46-4701022 · filings Cleveland Charity, 501(c)(3) $978,480 Urban Family Development CenterEIN 46-4676418 · filings Columbus Charity, 501(c)(3) $668,972 National Conference For Community And Justice Of Greater DaytonEIN 34-2056247 · filings Dayton Charity, 501(c)(3) $621,455 Scioto Educational FoundationEIN 93-1335805 · filings Columbus Charity, 501(c)(3) $458,408
The 119 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.