| Abbreviation | Definition |
|---|---|
| RKT | Rapid Knowledge Transfer |
| RKT | Rocket |
| RKVDU | Remote Keyboard Visual Display Unit |
| RL | Readiness Level |
| RL | Requested Lifetime |
| RL | Rule |
| RLA | Relative Littoral Area |
| RLB | Relocatable Building |
| RLC | Royal Logistics Corps |
| RLCEU | Remote Launch Communications Enhancement Upgrade |
| RLCP | Rear Logistic Command Post |
| RLD | Ready to Load Date |
| RLD | Ready-To-Load Date |
| RLE | Rail Liaison Element |
| RLG | Regional Liaison Group |
| RLG | Ring Laser Gyro |
| RLGM | Remote Loop Ground Multiplexer |
| RLGM | Remote Loop Group Multiplexer |
| RLGM/CD | Remote Loop Group Multiplexer/cable Driver |
| RLH | Run Like Hell |