| OCEA | Ohio Catholic Education Association 
| Others |
| OCEA | Ohio Cooperative Education Association
| Others |
| OCEA | Okeechobee County Education Association
| Others |
| OCEA | Oklahoma Code Enforcement Association
| Others |
| OCEA | Oldham County Environmental Authority
| Others |
| OCEA | Ontario Cooperative Education Association
| Others |
| OCEA | Orange County Employees Association
| Others |
| OCEA | Orange County Enrolled Agents
| Others |
| OCEA | Orange County Escrow Association
| Others |
| OCEA | Ormsby County Education Association
| Others |
| OCEA | Osceola County Education Association
| Others |
| OCEA | Outstanding Civil Engineering Achievement
| Others |