| Abbreviation | Definition |
|---|---|
| NYCE | New Young Creative Entertainers |
| NYEA | New York Expessive Arts |
| NYSSSA | New York State Summer School for the Arts |
| OA | Over Acting |
| OAP | One Act Play |
| OAT | Open Air Theater |
| OB | Off Broadway |
| OBC | Original Broadway Cast |
| OC | Open Canvas |
| OC | Open Category |
| OC | Opening Ceremony |
| OC | Other Character |
| OC | Own Creation |
| OCAA | Ouray County Arts Association |
| OCED | Organisation for Cultural Exchange and Disagreement |
| OCPAC | Orange County Performing Arts Center |
| OCW | Opera Camerata of Washington |
| OCW | Ozark Creative Writers |
| ODA | Open Directing Assignment |
| ODC | Oberlin Dance Collective |