| Ohio Medical Transportation IncColumbus | Form 990 | $40,730,914FY2025 |
| National Registry of Emergency Medical TechniciansColumbus | Form 990 | $31,271,346FY2024 |
| Wintersville Volunteer Fire DepartmentWintersville | Form 990 | $3,902,911FY2024 |
| Uniontown Fire DepartmentUniontown | Form 990 | $2,207,942FY2025 |
| Hopedale Volunteer Fire DepartmentHopedale | Form 990 | $2,110,750FY2025 |
| M & M Fire DepartmentMcConnelsville | Form 990 | $1,882,700FY2025 |
| Greentown Volunteer Fire Department IncUniontown | Form 990 | $1,659,991FY2024 |
| Auburn Volunteer Fire DepartmentAuburn Twp | Form 990 | $1,594,763FY2024 |
| Churches of Christ Disaster Response TeamTipp City | Form 990 | $1,477,415FY2025 |
| Brilliant Volunteer Fire Department IncBrilliant | Form 990 | $1,410,142FY2024 |
| Newbury Volunteer Fire Department IncNewbury | Form 990 | $1,404,742FY2024 |
| Regional EMS IncSherrodsville | Form 990 | $1,354,956FY2024 |
| ArgonautCleveland | Form 990 | $1,225,104FY2025 |
| Town & Country Fire DistrictWest Salem | Form 990 | $1,113,487FY2025 |
| Middlefield Volunteer Fire Dept IncMiddlefield | Form 990 | $1,092,781FY2024 |
| Bolivar Volunteer Fire Department IncBolivar | Form 990 | $1,078,607FY2025 |
| Bergholz Volunteer Fire CompanyBergholz | Form 990 | $1,042,554FY2023 |
| Burton Volunteer Fire DepartmentBurton | Form 990 | $985,529FY2025 |
| Macys North Star Relief FundSpringdale | Form 990 | $898,816FY2026 |
| Upper Scioto Valley Ambulance DistrictAlger | Form 990 | $886,296FY2024 |
| Hanover Volunteer Fire Department IncNewark | Form 990 | $863,929FY2025 |
| Crawford Hoying FoundationDublin | Form 990 | $822,034FY2024 |
| Farmersville Fire Association IncFarmersville | Form 990 | $796,586FY2025 |
| Reno Volunteer Fire DepartmentReno | Form 990 | $785,622FY2024 |
| Washington Fire DepartmentZanesville | Form 990 | $755,956FY2024 |
| Wayne County Fire and Rescue AssociationApple Creek | Form 990 | $714,066FY2024 |
| Devola Volunteer Fire Company IncMarietta | Form 990 | $685,309FY2024 |
| West Point Volunteer Fire Depatment IncLisbon | Form 990 | $635,745FY2025 |
| Knox Community Hospital FoundationMount Vernon | Form 990 | $633,579FY2024 |
| Fredericksburg Fire AssociationFredericksburg | Form 990 | $629,414FY2025 |
| Golden Retrievers in Need Rescue Service IncCleveland | Form 990 | $590,093FY2025 |
| Townsend Township Volunteer Fire Department IncVickery | Form 990 | $575,499FY2025 |
| Unionport Volunteer Fire & Rescue IncBloomingdale | Form 990 | $575,253FY2024 |
| Hamilton Township TrusteesIronton | Form 990 | $573,957FY2025 |
| Proampac Employee Assistance FundCincinnati | Form 990 | $569,128FY2025 |
| Barton Volunteer Fire DepartmentBarton | Form 990 | $556,183FY2025 |
| Miller City Volunteer Fire DeptMiller City | Form 990 | $524,523FY2025 |
| National Trail Volunteer Fire Department IncGratiot | Form 990 | $506,775FY2025 |
| Crashcourse Village IncDayton | Form 990 | $496,878FY2025 |
| Ohio Fire & Emergency Services FoundationWorthington | Form 990 | $493,919FY2025 |
| East Springfield Volunteer Fire Dept IncBloomingdale | Form 990 | $467,046FY2025 |
| Hope for CrisisMillersburg | Form 990 | $459,174FY2024 |
| Somerton Volunteer Fire DepartmentBarnesville | Form 990 | $456,104FY2024 |
| New Pittsburg Fire and Rescue Association IncWooster | Form 990 | $439,165FY2024 |
| Frazeysburg Vol Fire DepartmentFrazeysburg | Form 990 | $435,315FY2024 |
| Damascus Fire Department IncDamascus | Form 990 | $394,995FY2025 |
| Hispanic Police Officers AssociationCleveland | Form 990 | $384,920FY2024 |
| Cridersville Volunteer Fire DepartmentCridersville | Form 990 | $374,425FY2025 |
| Homer Volunteer Fire DepartmentUtica | Form 990 | $372,823FY2024 |
| The Caldwell Volunteer Fire CompanyCaldwell | Form 990 | $362,313FY2025 |