| RS&R | Repair Services and Retail 
| Others |
| RSR | Radar Sensor Right
| Others |
| RSR | Radio Suisse Romande
| Others |
| RSR | Rajab Shaban and Ramadhan
| Others |
| RSR | Rally Sport Racing
| Others |
| RSR | Rally Sport Replicas
| Others |
| RSR | Ransburg Scout Reservation
| Others |
| RSR | Rapid Social Response
| Others |
| RSR | Rationalis Summarum Rationum
| Others |
| RSR | Readiness Status Report
| Others |
| RSR | Ready Set Race
| Others |
| RSR | Real Science Radio
| Others |
| RSR | Real Sim Racing
| Others |
| RSR | Real Space R-factor
| Others |
| RSR | Really Scorched Racer
| Others |
| RSR | Really Simple Reporting
| Others |
| RSR | Realtime Simulations and Rollplaying
| Others |
| RSR | Rear Seat Relaxation
| Others |
| RSR | Rear Seat Reminder
| Others |
| RSR | Rear Seat Remote
| Others |
| RSR | Reciprocal Of Sum Of Reciprocals
| Others |
| RSR | Reconnaissance de la Signalisation Routiere
| Others |
| RSR | Redshift Search Receiver
| Others |
| RSR | Redundant Source Routing
| Others |
| RSR | Region Student Representative
| Others |
| RSR | Regional School of Racing
| Others |
| RSR | Regular sinus rhythm
| Others |
| RSR | Regulatory And Statistical Return
| Others |
| RSR | Rehabilitation Service Representative
| Others |
| RSR | Relative Skill Ratio
| Others |
| RSR | Remediation Standard Regulations
| Others |
| RSR | Remorque de Secours Routier
| Others |
| RSR | Remote Sensing Research, Inc.
| Others |
| RSR | Remote Start Ready
| Others |
| RSR | Remote Station Reporter
| Others |
| RSR | Removed Sets Revision
| Others |
| RSR | Renaissance Steel Research
| Others |
| RSR | Renault Service Roumanie
| Others |
| RSR | Renault Sport Racing
| Others |
| RSR | Renn Sport Racer
| Others |
| RSR | RennSport Rennwagen
| Others |
| RSR | Repair Survival Rate
| Others |
| RSR | Required Supply Rate
| Others |
| RSR | Research Support Request
| Others |
| RSR | Researcher
| Others |
| RSR | Rest Stop Rodders
| Others |
| RSR | Retail Sales Representative
| Others |
| RSR | Retail Systems Research
| Others |
| RSR | Reverse Slope Rib
| Others |
| RSR | Review Summary Report
| Others |
| RSR | Revolution Sim Racing
| Others |
| RSR | Richmond Snow Rovers (eastern Ontario snowmobile club)
| Others |
| RSR | Road Safety Remuneration
| Others |
| RSR | Road Safety Research
| Others |
| RSR | Road Safety Rules
| Others |
| RSR | Road Sign Recognition
| Others |
| RSR | Road Street and Race
| Others |
| RSR | Road Street Racing
| Others |
| RSR | Rochester and Southern Railroad
| Others |
| RSR | Rochester Southern Railroad
| Others |
| RSR | Rockem Sockem Robots
| Others |
| RSR | Rocketsports Racing
| Others |
| RSR | Rodeo Stock Registry of North America
| Others |
| RSR | Ron Simons Racing
| Others |
| RSR | Rose Slinkhard Ravenclaw
| Others |
| RSR | Rotating Shadowband Radiometer
| Others |
| RSR | Rotordynamics Seal Research
| Others |
| RSR | Rotordynamics- Seal Research
| Others |
| RSR | Route Surveillance Radar
| Others |
| RSR | Routine Safety Rounds
| Others |
| RSR | Rover Sports Register
| Others |
| RSR | Run Sarah Run
| Others |
| RSR | Run Stop Rape
| Others |
| RSR | Runtime Status Register
| Others |