| Other organizations in Ohio |
| Id | Name | Address | State | Established | Total Income |
| 1 | Orphans Prayer Inc | 319 Ravenna Street, Hudson, OH 44236 | OH | 2009-09 | $0 |
| 2 | Orrville Community Chorus Inc | Po Box 274, Orrville, OH 44667 | OH | 2003-04 | $0 |
| 3 | Orrville Fire Department Auxiliary Inc | 111 N Linden Ave, Orrville, OH 44667 | OH | 1977-06 | $0 |
| 4 | Osgood Volunteer Firemen | PO BOX 94, Osgood, OH 45351-0094 | OH | 2003-03 | $0 |
| 5 | Osnaburg Historical Society | 131 E Nassau St, East Canton, OH 44730 | OH | 1988-12 | $0 |
| 6 | Osnaburg Quilt And Fiber Art Guild | 6855 Orchardview Drive Se, East Canton, OH 44730 | OH | 2011-10 | $0 |
| 7 | Ocra Cardinal Foundation | 605 N High St Pmb298, Columbus, OH 43215 | OH | 1997-03 | $0 |
| 8 | Ostomy Support Group Dayton Ohio | 135 Waterford Drive, Centerville, OH 45458 | OH | 2006-05 | $0 |
| 9 | Otm Ministries | 10524 Eastland Road, Strongsville, OH 44149 | OH | 2008-09 | $0 |
| 10 | Ottawa County Riverview Nursing Home Auxiliary | 8180 W State Rt 163, Oak Harbor, OH 43449 | OH | 1987-07 | $0 |
| 11 | Ottawa Hills Prevention Advisory Committee | 2532 Evergreen Road, Toledo, OH 43606 | OH | 2005-07 | $0 |
| 12 | Ottawa Volunteer Fire Department Association Inc | 136 N Oak Street, Ottawa, OH 45875 | OH | 2008-11 | $0 |
| 13 | Otterbein Leipsic | 580 North State Route 741, Lebanon, OH 45036 | OH | 2001-12 | $0 |
| 14 | Ottoville Park Playground Equipment Fund | PO BOX 100, Ottoville, OH 45876 | OH | 2013-07 | $0 |
| 15 | Otway Community Society Fo Presevation Of Historical Landmarks Inc | PO BOX 38, Otway, OH 45657 | OH | 2013-02 | $0 |
| 16 | Our Croatia Inc | 34900 Lakeshore Blvd, Eastlake, OH 44095 | OH | 1985-03 | $0 |
| 17 | Our Family Fathers And Mothers Involved In Local Youth | 234 Hemlock Drive, Elyria, OH 44035 | OH | 2007-05 | $0 |
| 18 | Our Heritage Our Home Inc | 365 Northcoast Point Dr, Eastlake, OH 44095 | OH | 2012-03 | $125,979 |
| 19 | Our Lady Queen Of Reading | 9228 Reading Road, Reading, OH 45215 | OH | 1990-05 | $0 |
| 20 | Our Town Coshocton | PO BOX 1633, Coshocton, OH 43812 | OH | 2013-03 | $0 |
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