OTOA
| Acronym | Definition |
|---|---|
| OTOA | Otoancorin |
| OTOA | Overseas Tour Operators Association (Japan) |
| OTOA | Ordo Templi Orientis Antiqua |
| OTOA | Ohio Tactical Officers Association (Kent, OH) |
| OTOA | Outdoor Tour Operators Association (Australia) |
| OTOA | One Thing or Another (commonly used phrase) |