| Abbreviation | Definition |
|---|---|
| OTF | On The Fly |
| OTF | Operational Task Force |
| OTF | Orders To Fly |
| OTG | Operational Target Graphic |
| OTG | Operational Task Group |
| OTH | Over the Horizon |
| OTHB | Over The Horizon Backscatter |
| OTH-B | Over-The-Horizon Backscatter (Radar) |
| OTHR | Over-the-Horizon Radar |
| OTHT | Over-The-Horizon Targeting |
| OTH-T | Over The Horizon - Targeting |
| OTI | Office of Transition Initiatives |
| OTIC | Operations and Tactics Instructor Course |
| OTJAG | Office of the Judge Advocate General |
| OTL | Operations and Transport Liaison |
| OTL | Over The Line |
| OTLO | Obey The Last Order |
| OTM | On The Move |
| OTM | On-line Training Module |
| OTMOP | Operational Test Measures Of Performance |