English abbreviations from rat to raw
- RAT (Ram air turbine)
- RATAC (Radar de Tir pour L'Artillerie de Campagne (radar for field artillery fire))
- RATC (Recallable Available Transmission Capability)
- RATE (Regional Advancements Of Training Efforts)
- RATELO (Radio Telephone Operator)
- RATT (Radio Teletype)
- RAU (Right As Usual)
- RAV (Reploid Age Verification)
- RAVAF (Royal Australian Virtual Air Force)
- RAVE (Randolph Area Volunteer Exchange)
- RAVEC (Regional Adult Vocational Education Council)
- RAW (Rifleman's Assault Weapon)