| Liberty High School Sports Hall of FameCanfield | Form 990-N | No figure |
| Tri-County North Athletic BoostersLewisburg | Form 990-N | No figure |
| Press Pros Scholarship Endowment IncCovington | Form 990-N | No figure |
| Chardon Schools Foundation IncChardon | Form 990-N | No figure |
| Red Pride Band BoostersEast Liverpool | Form 990-EZ | $32,996FY2026 |
| Sharon Elementary PTOSharon Center | Form 990-EZ | $32,866FY2025 |
| Scioto Elementary PTOCommercial Point | Form 990-N | No figure |
| Orrville Public Schools Parent Teacher OrganizationOrrville | Form 990-N | No figure |
| Green All Sports Booster Club of Green SchoolsGreen | Form 990-EZ | $32,501FY2025 |
| Maranatha Preschool Park IncAkron | Form 990-N | No figure |
| Powers Parent-Teacher OrganizationAmherst | Form 990-N | No figure |
| Ross Christian Academy FoundationChillicothe | Form 990-N | No figure |
| Wyatt S Reese Memorial FundBradford | Form 990-N | No figure |
| Firestone High School Music AssociationAkron | Form 990-EZ | $32,227FY2025 |
| Bath Parent Teacher Society IncLima | Form 990-EZ | $32,222FY2025 |
| Parent Booster USA IncAshtabula | Form 990-EZ | $32,042FY2025 |
| Glenoak Golden Eagle Kick Off Club IncCanton | Form 990-N | No figure |
| Clinton Massie Elementary PTOClarksville | Form 990-EZ | $31,986FY2025 |
| West Muskingum Elementary School BoostersZanesville | Form 990-EZ | $31,885FY2025 |
| Normandy Invaders Booster ClubParma | Form 990-N | No figure |
| Parent Booster USA IncJackson | Form 990-EZ | $31,743FY2026 |
| Parent Booster USA IncSouth Vienna | Form 990-N | No figure |
| Harmon High PTOAurora | Form 990-EZ | $31,666FY2025 |
| Center School AssociationMayfield Village | Form 990-N | No figure |
| West Union Elementary PTOWest Union | Form 990-EZ | $31,373FY2024 |
| Graham Band Parents OrganizationSaint Paris | Form 990-N | No figure |
| Cea FoundationColumbus | Form 990-N | No figure |
| Buckeye Central Music Boosters IncNew Washington | Form 990-N | No figure |
| McPherson Middle School Boosters IncClyde | Form 990-N | No figure |
| Parkwood Elementary School Parent Teacher OrganizationBeavercreek | Form 990-N | No figure |
| Pymapuning Valley Athletic BoostersAndover | Form 990-EZ | $30,801FY2025 |
| Donovan PTOLebanon | Form 990-EZ | $30,756FY2025 |
| Edgewood Elementary PTOMarysville | Form 990-N | No figure |
| Garaway Music Boosters IncSugarcreek | Form 990-EZ | $30,262FY2025 |
| Agttgp-NaGahanna | Form 990-N | No figure |
| Toronto High School Alumni Association IncToronto | Form 990-N | No figure |
| Pfro CorporationReynoldsburg | Form 990-N | No figure |
| Killbuck Community Library IncKillbuck | Form 990-N | No figure |
| Ilab and SupportersRussells Point | Form 990-EZ | $29,568FY2024 |
| Heritage Elementary School PTOMarion | Form 990-N | No figure |
| Mayfield Athletic Boosters Club Mayfield High SchoolMayfield Village | Form 990-EZ | $29,408FY2025 |
| Coldwater Band BoostersColdwater | Form 990-EZ | $29,287FY2025 |
| Gestalt Instt of Cleveland Orgn & Syts Devt Integrative Styd Ctr IncCleveland Heights | Form 990-N | No figure |
| Walker Brightwell FoundationCincinnati | Form 990-EZ | $28,955FY2025 |
| Alum Creek Elementary Parents and Teachers OrganizationLewis Center | Form 990-N | No figure |
| Rotary Foundation of GranvilleGranville | Form 990-N | No figure |
| Fort Loramie Band Parents IncFort Loramie | Form 990-N | No figure |
| St Anthony Library CompanyRocky River | Form 990-N | No figure |
| Omega Lamp FoundationColumbus | Form 990-N | No figure |
| Association of Sycamore Schools Parent OrganizationsCincinnati | Form 990-N | No figure |