| Abbreviation | Definition |
|---|---|
| OAF | OnAirForce |
| OAG | Our Affectionate Guardians |
| OAH | Omnipotent Author Hammerspace |
| OAM | Outdoor Advertising Magazine |
| OAS | On American Soil: How Justice Became a Casualty of World War II |
| OAV | Original Adult Video |
| OAV | Original Animated Video |
| OAV | Original Animation Version |
| OAV | Original Animation Video |
| OB | Original Broadcast |
| OB | Outdoor Broadcast |
| OB | Outside Broadcast |
| OBB | Oklahoma Business Bulletin |
| OBB | Opening Billboard |
| OBC | Oprah's Book Club |
| OBR | Oyster Boy Review |
| OBS | Olympic Broadcasting Services |
| OC | Off Camera |
| OC | Original Character |
| OC | Original Content |