| Springfield Schools FoundationHolland | Form 990-EZ | $63,980FY2024 |
| Vinton County High School Athletic Boosters IncMcArthur | Form 990-EZ | $63,814FY2025 |
| The Mari Etta Tiger Athletic Boosters ClubMarietta | Form 990-EZ | $63,339FY2025 |
| Mason Early Childhood Center Parent-Teacher Organization MeccptMason | Form 990-EZ | $63,152FY2025 |
| Newark Junior-Senior High School Band Parents Club IncNewark | Form 990-EZ | $63,081FY2022 |
| Sacred Heart School PTO IncWadsworth | Form 990-EZ | $63,047FY2026 |
| Liberty Benton PTOFindlay | Form 990-EZ | $63,032FY2025 |
| Elgin Music Booster AssociationGreen Camp | Form 990-EZ | $63,017FY2025 |
| Greater Cleveland Junior Golf Scholarship FundCleveland | Form 990-EZ | $62,971FY2024 |
| Hudson Parent-Teacher OrganizationHudson | Form 990-EZ | $62,955FY2025 |
| Sherwood Elementary PTO IncCincinnati | Form 990-EZ | $62,918FY2025 |
| Little Miami High School Parentteacher OrganizationMorrow | Form 990-EZ | $62,780FY2025 |
| Marietta Rotary FoundationMarietta | Form 990 | $62,693FY2024 |
| Grove City Chamber FoundationGrove City | Form 990-EZ | $62,686FY2024 |
| Lancaster Golden Gales Touchdown ClubLancaster | Form 990-EZ | $62,644FY2025 |
| Robert F Schultz Elementary PTODelaware | Form 990-EZ | $62,493FY2025 |
| Wooster Speech & Debate Parents IncWooster | Form 990-EZ | $62,427FY2025 |
| Ridgewood Students Music Education Boosters Association IncWest Lafayette | Form 990-EZ | $62,288FY2025 |
| James a Garfield Elementary Parent Teacher OrganizationGarrettsville | Form 990-EZ | $62,110FY2025 |
| Maple Dale PTOBlue Ash | Form 990-EZ | $61,831FY2025 |
| Upper Arlington Booster Club IncUpper Arlington | Form 990-EZ | $61,660FY2025 |
| Christian Communicators of AmericaColumbus | Form 990-EZ | $61,650FY2025 |
| Harmony Helpers CoMedina | Form 990-EZ | $61,436FY2025 |
| Ohio End of Life OptionsBeachwood | Form 990-EZ | $61,431FY2025 |
| Parent Booster USA IncSouth Vienna | Form 990-EZ | $61,353FY2026 |
| Parent Booster USA IncMassillon | Form 990-EZ | $61,329FY2025 |
| Parent Booster USA IncWashington Court House | Form 990-EZ | $61,062FY2026 |
| The North End Foundation of BereaBerea | Form 990-EZ | $61,000FY2023 |
| Sandusky Library and Follett House Museum FoundationSandusky | Form 990-EZ | $60,691FY2025 |
| Jackson Cross Country Parents IncCanton | Form 990-EZ | $60,687FY2025 |
| Waynesville Parent Teacher OrganizationWaynesville | Form 990-EZ | $60,673FY2026 |
| Vermilion Band Booster Club IncVermilion | Form 990-EZ | $60,665FY2025 |
| Clearcreek Elementary PTOSpringboro | Form 990-EZ | $60,594FY2025 |
| Wauseon Indian Music Boosters IncWauseon | Form 990-EZ | $60,574FY2025 |
| Warren Elementary Academic BoosterVincent | Form 990-EZ | $60,457FY2025 |
| Buckeye Valley West PTOOstrander | Form 990-EZ | $60,418FY2025 |
| Lakota East Parent Teacher Student OrganizationLiberty Township | Form 990-EZ | $60,260FY2025 |
| Dream Farm Education CenterHilliard | Form 990-EZ | $60,124FY2025 |
| Independence Kiwanis Foundation IncIndependence | Form 990-EZ | $59,958FY2025 |
| Nick Rozanski Memorial FoundationDublin | Form 990-EZ | $59,808FY2025 |
| Poor Clares of Perpetual Adoration Canton Ohio Foundation IncCanton | Form 990-EZ | $59,807FY2025 |
| Al Hidaya AcademyColumbus | Form 990-EZ | $59,763FY2025 |
| Toronto Band ParentsToronto | Form 990-EZ | $59,586FY2024 |
| Crawford College ConnectionBucyrus | Form 990 | $59,515FY2025 |
| Strasburg Tiger Foundation IncStrasburg | Form 990 | $59,480FY2025 |
| CCS Swim Team Boosters IncCanton | Form 990-EZ | $59,423FY2025 |
| Fairless Alumni Association IncBrewster | Form 990-EZ | $59,364FY2025 |
| Musketeer Athletic BoostersFort Jennings | Form 990-EZ | $59,276FY2025 |
| Ohio Chemical Education FoundationColumbus | Form 990-EZ | $59,131FY2025 |
| Marion Community Scholarship Foundation IncMaria Stein | Form 990 | $58,945FY2025 |