| Abbreviation | Definition |
|---|---|
| RAP | Rocket Accelerated Penetrator |
| RAP | Rocket Assisted Projectile |
| RAP | Round-up Ammunition Planning |
| RAPC | Royal Army Pay Corps |
| RAPID | Reorganised Army Plains Infantry Division |
| RAPIDE | Re-locatable Army Processors for Intelligence Data - Europe |
| RAPIDE | Re-locatable Army Processors for Intelligence Data-Europe |
| RAPIDSIM | Rapid Intertheater Deployment Simulation Model |
| RAPMA | R.A. Pandey Maritime Academy (India) |
| RAPOE | Regional Aerial Port Of Embarkation |
| RAPOE | Regional APOE |
| RAPS | Retired Army Personnel System |
| RAPT | Retractable Amphibious Pontoon Technology |
| RAPTR | Redstone Aviation Propulsion Test and Research |
| RAR | Royal Australian Regiment |
| RARO | Regular Army Reserve Officer |
| RARS | Reusable ADA Repository System |
| RAS | Rear Area Security |
| RAS | Record Association System |
| RAS | Recovery Activation Signal |