| Beacon Elementary Parent Teacher OrganizationHilliard | Form 990-N | No figure |
| Westfall Boosters Club IncWilliamsport | Form 990-EZ | $28,312FY2025 |
| Academic Booster Club of the Bryan City SchoolsBryan | Form 990-N | No figure |
| Pinney Elementary PTODublin | Form 990-EZ | $28,106FY2026 |
| International Sun Do AssociationCincinnati | Form 990-N | No figure |
| Clark-Shawnee Band BoostersSpringfield | Form 990-N | No figure |
| Parent Booster USA IncSpringfield | Form 990-EZ | $28,016FY2026 |
| Big Walnut Middle School PTOSunbury | Form 990-N | No figure |
| Brookville Booster Club IncBrookville | Form 990-EZ | $27,864FY2025 |
| Appna Greater CincinnatiMason | Form 990-N | No figure |
| Morgan Elementary PTOHamilton | Form 990-EZ | $27,638FY2025 |
| Tippecanoe Athletic Boosters IncTipp City | Form 990-N | No figure |
| St Boniface Reserved Education FoundationPiqua | Form 990-EZ | $27,465FY2025 |
| Lake Center Christian School Blue and Gold Athletic Booster ClubHartville | Form 990-N | No figure |
| Bloom Carroll Elementary PTOCarroll | Form 990-N | No figure |
| Ohio Law Enforcement K-9 AssociationNew Lebanon | Form 990-EZ | $27,211FY2025 |
| Our Dyslexic Children IncUpper Arlington | Form 990-N | No figure |
| Nellie Martin Carman Alumnischolarship FundBrooklyn | Form 990-N | No figure |
| Elyria Public Library Foundation IncElyria | Form 990-N | No figure |
| EYEJCleveland | Form 990-N | No figure |
| SHSAAColumbus | Form 990-N | No figure |
| Willard Grizzell Middle School PTODublin | Form 990-N | No figure |
| Conotton Valley Alumni AssociationSherrodsville | Form 990-N | No figure |
| Nederlandse School Cleveland IncShaker Heights | Form 990-N | No figure |
| Leaders Hub FoundationColumbus | Form 990-N | No figure |
| Anthony Wayne Education FoundationWaterville | Form 990-N | No figure |
| Boyd E Smith Elementary Parent Teacher OrganizationMilford | Form 990-N | No figure |
| Bellaire High School Alumni AssociationBellaire | Form 990-N | No figure |
| Reed Memorial Library Foundation IncRavenna | Form 990-N | No figure |
| Friends of Avon Lake Public LibraryAvon Lake | Form 990-N | No figure |
| Parent Booster USA IncSouth Charleston | Form 990-N | No figure |
| Rowe Educational Scholarship FundWestlake | Form 990-N | No figure |
| Friends of Ginn Academy CorporationCleveland | Form 990-N | No figure |
| Beverly School PTOToledo | Form 990-N | No figure |
| Ohio Society of Association Executives FoundationColumbus | Form 990-N | No figure |
| Foundation for the Science of Human DonationMaumee | Form 990-N | No figure |
| Sycamore High School PTOCincinnati | Form 990-EZ | $24,298FY2025 |
| West Tech Alumni Association IncWestlake | Form 990-N | No figure |
| Roger E Boomershine Skill Center IncSpringfield | Form 990-N | No figure |
| Love Love Love MinistriesKent | Form 990-N | No figure |
| Van Buren Music BoostersVan Buren | Form 990-EZ | $24,077FY2024 |
| Girard High School Band Booster ClubVienna | Form 990-EZ | $23,924FY2025 |
| Munson Parent Teacher OrganizationChardon | Form 990-EZ | $23,692FY2025 |
| Russia Athletic BoostersRussia | Form 990-N | No figure |
| Unioto Music Association IncChillicothe | Form 990-N | No figure |
| Parma City Schools FoundationParma | Form 990-N | No figure |
| Captain McCarthy Scholarship FoundationBerea | Form 990-N | No figure |
| Ashland City Schools PTOAshland | Form 990-EZ | $23,051FY2025 |
| Violet Elementary Parent Teacher OrganizationPickerington | Form 990-N | No figure |
| Dabat Children and Elderly Support AssociationReynoldsburg | Form 990-N | No figure |