| OCCB | Oakhurst Community Concert Band 
| Others |
| OCCB | Oasis Certificate and Competency Board
| Others |
| OCCB | OASIS Certificate and Competency Board, Inc.
| Others |
| OCCB | Oberlin College Concert Board
| Others |
| OCCB | Oceania Congress for Conservation Biology
| Others |
| OCCB | Office of Community Capacity Building
| Others |
| OCCB | Old Car Club of Bangladesh
| Others |
| OCCB | Omer Citizen Community Board
| Others |
| OCCB | Ontario Conference of Catholic Bishops
| Others |
| OCCB | Orange County Circuit Breakers
| Others |
| OCCB | Oregon Construction Contractors Board
| Others |
| OCCB | Organic Chemistry and Chemical Biology
| Others |
| OCCB | Organized Crime Control Bureau
| Others |
| OCCB | Osceola County Conservation Board
| Others |
| OCCB | Ottawa Community Concert Band
| Others |
| OCCB | Oxford and Cambridge Club Beijing
| Others |
| OCCB | Oxford and Cambridge Club of Beijing
| Others |