| National Society of the Daughters of the American RevolutionSpringfield | Form 990 | $50,840FY2025 |
| Dr Essy Exploits Foundation IncCincinnati | Form 990-EZ | $50,800FY2025 |
| Akron Symphonic WindsCleveland | Form 990-EZ | $50,260FY2025 |
| Grimes Flying Lab FoundationSpringfield | Form 990-EZ | $50,218FY2024 |
| National Issues Forum Network IncDayton | Form 990-EZ | $50,035FY2024 |
| Ellet Music Boosters IncAkron | Form 990-EZ | $49,788FY2025 |
| Cleveland Chamber Symphony Council IncCleveland | Form 990-N | No figure |
| Italian Cultural Garden AssociationCleveland | Form 990-EZ | $49,515FY2025 |
| Pleasant Music BoostersMarion | Form 990-EZ | $49,066FY2025 |
| Yellow Springs Arts CouncilYellow Springs | Form 990-N | No figure |
| Trust Drum CirclesCopley | Form 990-N | No figure |
| Belpre Historical Society IncBelpre | Form 990-N | No figure |
| Dayton Feis IncFairborn | Form 990-N | No figure |
| Breath Collective IncCincinnati | Form 990-N | No figure |
| Cleveland Dance Project CompanyBrooklyn Heights | Form 990-EZ | $48,087FY2025 |
| WindsongLakewood | Form 990-N | No figure |
| Hermit Club CompanyCleveland | Form 990-N | No figure |
| Harding Band Parents Booster Club IncWarren | Form 990-EZ | $47,192FY2025 |
| American Art Pottery Assoc IncCincinnati | Form 990-N | No figure |
| Perrysburg Area Historic MuseumPerrysburg | Form 990 | $46,349FY2025 |
| Hungarian Media FoundationBrecksville | Form 990-N | No figure |
| National Imperial Glass Collectors SocietyBellaire | Form 990-N | No figure |
| Licking County Players IncNewark | Form 990-N | No figure |
| Smithville Community Historical SocietySmithville | Form 990-N | No figure |
| Hearts AlignedColumbus | Form 990-N | No figure |
| Saint Patricks Day Parade CommitteeRocky River | Form 990-N | No figure |
| Association of Bioethics ProgramCleveland | Form 990-N | No figure |
| Pump House Art GalleryChillicothe | Form 990-EZ | $44,309FY2024 |
| Daytona 200 Memorial FundThornville | Form 990-N | No figure |
| Lebanon Band ParentsLebanon | Form 990-EZ | $43,740FY2025 |
| Great Decisions of Wayne County IncWooster | Form 990-N | No figure |
| Greene County Ohio Historical SocietyXenia | Form 990-N | No figure |
| Ashtabula County Antique Engine Club IncWilliamsfield | Form 990-EZ | $43,039FY2024 |
| Fine Arts Council of Trumbull County IncWarren | Form 990-N | No figure |
| The Kalymnian Benefical Society of ProdromosCampbell | Form 990-EZ | $42,635FY2025 |
| Corryville Suzuki Project IncCincinnati | Form 990-N | No figure |
| Perrysburg Schools Band Boosters IncPerrysburg | Form 990-N | No figure |
| Graffiti Heart CorporationCleveland | Form 990-N | No figure |
| Tablertown People of Color MuseumStewart | Form 990-N | No figure |
| Umang Gujarati AssociationDayton | Form 990-N | No figure |
| Canterbury Heritage Foundation CoSouth Russell | Form 990-EZ | $41,246FY2025 |
| Perrysburg Vocal Music Boosters IncPerrysburg | Form 990-N | No figure |
| A Kid at Art for the Heart IncChardon | Form 990-N | No figure |
| Springfield Burying Ground IncSpringfield | Form 990-N | No figure |
| Oakwood Community Services IncOakwood Village | Form 990-N | No figure |
| Black River Band BoostersSullivan | Form 990-EZ | $40,390FY2025 |
| Champaign County Preservation AllianceUrbana | Form 990-N | No figure |
| Unionville Tavern Preservation SocietyMadison | Form 990-N | No figure |
| American Center for German CultureColumbus | Form 990-N | No figure |
| Greater Cleveland Feis SocietyCleveland | Form 990-N | No figure |