| Abbreviation | Definition |
|---|---|
| RBOL | Rakovski Bulgarian Officers Legion |
| RBS56 | Bill Missile |
| RBS56 | ill Missile |
| RBS70 | ay Rider Missile |
| RBS70 | Ray Rider Missile |
| RBSF | Russian Black Sea Fleet |
| RBT | Red-Black Tree |
| RBT | Rifle Barrel Technology |
| RBU | Radical Boat Reunion |
| RBU | Ready Boat Unit |
| RBU | Reaktivno-Bombovaja Ustanovka ( 50:B82=>-><1>20O #AB0=>2:0, Russian Anti-submarine rocket) |
| RBU | Reaktivno-Bombovaja Ustanovka (?????????-???????? ?????????, Russian Anti-submarine rocket) |
| RBU | Reaktivno-Bombovaja Ustanovka (Реактивно-Бомбовая Установка, Russian Anti-submarine rocket) |
| RBUAF | Royal Bulgarian Air Force |
| RC | Radio Controlled |
| RC | Raiding Cavalry |
| RC | Raw Command |
| RC | Reaction Center |
| RC | Read and Cover |
| RC | rear column |