| Abbreviation | Definition |
|---|---|
| RSE | Race Specific Equipment |
| RSF | Recreational Sports Facility |
| RSG | Ready Steady Go |
| RSG | Rhythmic Sportive Gymnastics |
| RSGC | Royal Sydney Golf Club |
| RSH | Royal Sporting House |
| RSI | Run Support Index |
| RSL | Real Salt Lake |
| RSL | Reserve Static Line |
| RSL | Retired Service League |
| RSL | Rugby Soccer League |
| RSN | Regional Sports Network |
| RSPB | Railway Sports Promotion Board |
| RSQ | Riding Safety Qualified |
| RSR | Ready Set Race |
| RSR | Richmond Snow Rovers (eastern Ontario snowmobile club) |
| RSR | Rockem Sockem Robots |
| RSRD | Red Stick Roller Derby |
| RSSSF | Rec.Sport.Soccer Statistics Foundation |
| RSVP | Ride Seattle to Vancouver and Party |