| Battelle Memorial InstituteColumbus | Form 990 | $13,526,408,187FY2025 |
| Parallax Advanced Research CorpBeavercrk Twp | Form 990 | $82,994,226FY2025 |
| American Society for Nondestructive Testing IncColumbus | Form 990 | $11,193,835FY2025 |
| Asm InternationalNovelty | Form 990 | $11,156,927FY2024 |
| Great Lakes Museum of Science Environment and TechnologyCleveland | Form 990 | $9,507,885FY2025 |
| Institute of Mathematical StatisticsWaite Hill | Form 990 | $2,943,733FY2024 |
| American Conference of Governmental Industrial Hygienists IncSharonville | Form 990 | $2,799,768FY2024 |
| Airable Research LabWorthington | Form 990 | $2,133,267FY2024 |
| American Chemical SocietyAkron | Form 990 | $2,087,581FY2024 |
| State Science and Technology InstituteColumbus | Form 990 | $1,705,018FY2024 |
| Asnt FoundationColumbus | Form 990 | $1,004,504FY2025 |
| Health-E-Gamer Foundation OhioColumbus | Form 990 | $683,138FY2025 |
| Mufon Mutual Ufo Network IncCincinnati | Form 990 | $529,278FY2025 |
| Edueverything IncCaledonia | Form 990 | $517,958FY2025 |
| Toxicology Excellence for Risk AssessmentCincinnati | Form 990 | $453,784FY2024 |
| American Peptide Society IncColumbus | Form 990 | $409,718FY2025 |
| Alliance for Working Together FoundationMentor | Form 990 | $337,514FY2024 |
| Akron Fossils & Science CenterCopley | Form 990 | $288,481FY2024 |
| Subantarctic Foundation for Ecosystems Research IncCincinnati | Form 990 | $240,817FY2025 |
| Ohio Natural Energy FoundationPataskala | Form 990 | $214,075FY2025 |
| Compressed Air Challenge IncCleveland | Form 990-EZ | $185,539FY2024 |
| Global Water ConsortiumTroy | Form 990-EZ | $182,470FY2025 |
| Cleveland Engineering SocietyCleveland | Form 990-EZ | $169,161FY2025 |
| Microbeam Analysis Society IncLewisburg | Form 990 | $152,860FY2024 |
| Scientific ProgressUniversity Heights | Form 990-EZ | $152,504FY2025 |
| The Soul Phone FoundationChillicothe | Form 990-EZ | $139,620FY2024 |
| National Assoc of Transp Technology Transfer CentersNashport | Form 990-EZ | $117,405FY2024 |
| American Chemical SocietyCincinnati | Form 990 | $113,778FY2025 |
| Black Boys in TechCincinnati | Form 990-EZ | $112,161FY2025 |
| Landonacure FoundationColumbus | Form 990-EZ | $83,283FY2021 |
| Chemical Engineering Division of AseeAkron | Form 990-EZ | $81,883FY2024 |
| Electric Vehicle Association of Ohio IncSpringboro | Form 990-EZ | $77,032FY2025 |
| Empowe-R Women of InfosecHilliard | Form 990-EZ | $65,659FY2024 |
| North American Deer Farmers Assoc Cervid Livestock FoundationCanton | Form 990 | $60,795FY2025 |
| North American Mixing Forum IncXenia | Form 990-EZ | $60,292FY2024 |
| Asm InternationalNovelty | Form 990-EZ | $24,294FY2024 |
| Inter-American Photochemical SocietyBowling Green | Form 990-N | No figure |
| Ohio Linuxfest CorporationPowell | Form 990-N | No figure |
| North American Strawberry Growers Research Foundation IncAshland | Form 990-N | No figure |
| Tech Community Coalition IncPowell | Form 990-N | No figure |
| Ohio Robotics IncDayton | Form 990-N | No figure |
| Asm InternationalNovelty | Form 990-N | No figure |
| International Society for Zinc BiologyAthens | Form 990-N | No figure |
| Adventure Novelty AssociationBellaire | Form 990-N | No figure |
| International Society of Motor ControlCincinnati | Form 990-N | No figure |
| Wayne County Astronomical SocietyWooster | Form 990-N | No figure |
| Institute of Applied Phenomenologyin Science and Technology IncCanal Fulton | Form 990-N | No figure |
| Internatonal Society of AutomationPerrysburg | Form 990-N | No figure |
| Society of Plastics EngineersMaineville | Form 990-N | No figure |
| Centerburg Robotics TeamCenterburg | Form 990-N | No figure |