| RAI |
Radioactive Iodine |
| RAID |
Redundant Array of Inexpensive Disks |
| RAID |
Rigorous Approach to Industrial Software Engineering |
| RAID |
Redundant Array of Independent Disks |
| RAIN |
Referral And Information Network |
| RAIU |
Radioactive Iodine Uptake |
| RAL |
Reduction and Acquisition of Lunar Pulse Heights |
| RAL |
Responsibility Assignment List |
| RALAC |
Repatriation artificial Limb and Appliance Centre |
| RALT |
Radar Altimeter |
| RAM |
Random Access Memory |
| RAM |
Royal Academy of Music |
| RAM |
Read Alternate Memory |
| RAM |
Recap and Movement Authorization |
| RAM |
Radar Absorption Material |
| RAM |
Research and Applications Module |
| RAM |
Responsibility Assignment Matrix |
| RAM |
Rectus Abdominis Muscle |
| RAMA |
Ram Burn Observation |
| RAMMP |
Records and Mail Management Project |
| RAMS |
Radar Absorption Noise and Clutter |
| RANC |
Research Applied to National Needs |
| RandD |
Research And Development |
| RANN |
Requirements Analysis Package |
| RAP |
Registered Apprenticeship Program |
| RAP |
Registered Accounting Practitioner |
| RAP |
Radar Approach and Control |
| RAP |
Reduced Acreage Program |
| RAP |
Rehabilitation Appliances Program |
| RAPCON |
Ram Air Progression System |
| RAPI |
Rutgers Alcohol Problem Index |
| RAPS |
Range and Range Rate |
| RAPS |
Right AFT Propulsion System |
| RAQCC |
Regional Air Quality Coordinating Committee |
| RAR |
Rotate Accumulator Right |
| RARR |
Requirements Allocation Sheet |
| RAS |
Responsive Access Small Cargo Affordable Launch |
| RAS |
Royal Agricultural Society |
| RASCAL |
Remote Access Scheduling Terminal |
| RASM |
Reserve Access Team |
| RAST |
Read And Shred Tape |
| RAT |
Radar Air Traffic Control Center |
| RAT |
Rapid Air Tranfer |
| RAT |
Ram Air Turbine |
| RATL |
Regulatory Audit Trade Liaison |
| RATT |
Remote Acquisition Unit |
| RAU |
Remote Acquisition Unit Interconnecting Station |
| RAW |
Research and Analysis Wing |
| RAW |
Read After Write |
| RAW |
Restauranteur Artist Warrior |