| Abbreviation | Definition |
|---|---|
| RSAE | Ranger Swim Ability Evaluation |
| RSDM | Regional Swimming Development Managers |
| RSL | Rappahannock Swim league |
| RSPSA | Residential Swimming Pool Safety Act |
| RTS | Ready To Swim |
| RVST | Roanoke Valley Swim Team |
| RVST | Rogue Valley Swim Team |
| RYSC | Royal Ypres Swimming Club (West-Vlaanderen, Belgium) |
| SA | Swimming Ascent |
| SAST | St Augustine Swim Team |
| SBR | swim bike run |
| SBR | Swim, Bike, Run |
| SCC | Swimming Christmas Cup |
| SCS | Southern California Swimming |
| SCSC | Sheffield City Swimming Club |
| SESA | South Eastern Swimming Association |
| SHARKS | Sharks Have A Right to Keep Swimming |
| SHSC | South Holderness Swimming Club |
| SIPE | Swimming Induced Pulmonary Edema |
| SLSC | South London Swimming Club |