| Other organizations in Ohio |
| Id | Name | Address | State | Established | Total Income |
| 1 | Ohio State University Alumni Association Inc, Osu Alumni Club Of Richland Co | 685 Scott Dr, Ontario, OH 44906 | OH | 1939-01 | $0 |
| 2 | Ohio State University Alumni Association Inc, Ohio State University Alumni Shelby County Ohio State University Alumni Association Inc | Po Box 42, Sidney, OH 45365 | OH | 1939-01 | $0 |
| 3 | Ohio State University Alumni Association Inc | 332 E Main Street, Lancaster, OH 43130 | OH | 1939-01 | $0 |
| 4 | Ohio Two-Cylinder Club | 8184 Palmer Rd Sw, Pataskala, OH 43062 | OH | | $0 |
| 5 | Ohio University Womens Club | 6 Marietta Avenue, Athens, OH 45701 | OH | | $0 |
| 6 | Ohio Valley Labor Management Cooperation Corporation Inc | Second National Building 830 Main Street No 906, Cincinnati, OH 45202 | OH | | $0 |
| 7 | Ohio Valley Local Education Association, Ohio Valley Ea | 15610 Meadow Glen Drive, Williamsburg, OH 45176 | OH | 1985-08 | $0 |
| 8 | Ohio Valley Officials Association- Basketball | 7935 Surreywood Dr, North Bend, OH 45052 | OH | 1985-05 | $0 |
| 9 | Ohio Valley Roller Girls Inc | 425 Nzane Hwy, Martins Ferry, OH 43935 | OH | 2013-12 | $0 |
| 10 | Ohioans For Health Insurance Options | 137 East State Street, Columbus, OH 43215 | OH | 2005-09 | $0 |
| 11 | Old Central Inc | 909 Front Street, Toledo, OH 43605 | OH | 1994-02 | $0 |
| 12 | Old Fort Local Education Association | 7635 North Cr 51, Old Fort, OH 44861 | OH | 1971-07 | $0 |
| 13 | Olentangy Berkshire Middle School Parent Teacher Organization | 2869 S 3 Bs And K Rd, Galena, OH 43021 | OH | 2013-09 | $59,156 |
| 14 | Olmsted Falls Education Association | 26937 Bagley Road, Olmsted Falls, OH 44138 | OH | 1981-08 | $0 |
| 15 | Omega Nu Tau Sorority Inc | 9564 Woodstate Dr, Cincinnati, OH 45251 | OH | 1972-05 | $0 |
| 16 | Omega Nu Tau Sorority Inc | 3283 Pebblebrook Ln, Cincinnati, OH 45251 | OH | 1972-05 | $0 |
| 17 | Omega Psi Phi Fraternity Inc Iota Psi Chapter | 2640 Old Forge Rd Apt E, Columbus, OH 43209 | OH | | $0 |
| 18 | Omega Psi Phi Fraternity, Xi Chi An Unincorporated Chapter Of Omega Psi Phi Fraternity Inc | Po Box 2408, Akron, OH 44309 | OH | 1953-01 | $0 |
| 19 | Omicron Delta Epsilon Intl Honor Society In Economics Inc | 3800 Victory Parkway, Cincinnati, OH 45207 | OH | 1974-01 | $0 |
| 20 | On Leong Chinese Merchants Association | 3139 W 142nd St, Cleveland, OH 44111-1405 | OH | 1945-12 | $0 |
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