| Friends of Lower Muskingum RiverMarietta | Form 990-N | No figure |
| Parkard Park Greenhouse Growers IncWarren | Form 990-N | No figure |
| Ohio Forest SanctuariesMalvern | Form 990-N | No figure |
| Wilderness EastBainbridge | Form 990-N | No figure |
| Columbiana Restoration & Beautification CommitteeColumbiana | Form 990-N | No figure |
| Bahamas Plastic Movement IncWesterville | Form 990-N | No figure |
| Eriesponsible IncWestlake | Form 990-N | No figure |
| Grassroots Foundation of Morrow CountyMount Gilead | Form 990-N | No figure |
| Trees & Trails FoundationCincinnati | Form 990-N | No figure |
| The Urban Tree Project IncColumbus | Form 990-N | No figure |
| Hocking River Commission IncAthens | Form 990-N | No figure |
| Israel Nature and Heritage Foundation of America IncGrove City | Form 990-N | No figure |
| Ideas InstituteCleveland Heights | Form 990-N | No figure |
| Luckey Garden ClubLuckey | Form 990-N | No figure |
| The Burning River Foundation IncCleveland | Form 990-N | No figure |
| German Garden and Cultural Foundation of Cleveland IncParma | Form 990-N | No figure |
| Conservation Foundation of AmericaCanal Winchester | Form 990-N | No figure |
| Wild Classroom IncNashport | Form 990-N | No figure |
| Imperfectly Perfect Foundation IncQuaker City | Form 990-N | No figure |
| Westwood GrowsCincinnati | Form 990-N | No figure |
| Wildlife Habitat Conservancy IncCanton | Form 990-N | No figure |
| Cuyahoga Valley Countryside ConservancyCuyahoga Falls | Form 990-N | No figure |
| Awe FoundationCanfield | Form 990-N | No figure |
| Environmental Experiences IncWooster | Form 990-N | No figure |
| Friends of the Asa Wright Nature Centre IncCincinnati | Form 990-N | No figure |
| Lisbon Landmark FoundationLisbon | Form 990-N | No figure |
| Allen County Master GardenersCairo | Form 990-N | No figure |
| Clean City of Willoughby IncWilloughby | Form 990-N | No figure |
| Friends of Van Buren State Park IncRisingsun | Form 990-N | No figure |
| Sandusky and Ottawa County Master Gardener AssociationFremont | Form 990-N | No figure |
| Friend of Punderson State ParkBeachwood | Form 990-N | No figure |
| Ohio Invasive Plants CouncilColumbus | Form 990-N | No figure |
| Fairfield Land Preservation AssociationLancaster | Form 990-N | No figure |
| Ohio Hunter and Trapper Educationinstructors AssociationCincinnati | Form 990-N | No figure |
| Sustainability for Educators Andthe EnvironmentKent | Form 990-N | No figure |
| Tuscarawas River Buried Valleywatershed CouncilWaynesburg | Form 990-N | No figure |
| Property Owners Want Equal RightsCincinnati | Form 990-N | No figure |
| Lebanon Council of Garden Clubs IncLebanon | Form 990-N | No figure |
| Sam Wharram Nature Club IncorportedAshtabula | Form 990-N | No figure |
| Firelands Audubon SocietySandusky | Form 990-N | No figure |
| Miama Valley Rose SocietyFairborn | Form 990-N | No figure |
| Darby Creek Matters IncLondon | Form 990-N | No figure |
| Wayne County Sustainable Energynetwork IncShreve | Form 990-N | No figure |
| Woodcock Nature Preserve IncAlbany | Form 990-N | No figure |
| Citizens Advocating Responsible EnergyChagrin Falls | Form 990-N | No figure |
| St Paris Graham Pee Wee AssociationSaint Paris | Form 990-N | No figure |
| Run for the Trails IncSeville | Form 990-N | No figure |
| Greater Montgomery County Master Gardener AssociationKettering | Form 990-N | No figure |
| Lake and Trails OrganizationMacedonia | Form 990-N | No figure |
| Armenian Cultural Garden IncPepper Pike | Form 990-N | No figure |