| Abbreviation | Definition |
|---|---|
| ISPE | Institute of Swimming Pool Engineers |
| ISR | Infant Swimming Resource |
| ISR | Infant Swimming Resource's |
| IWSA | International Winter Swimming Association |
| JCSC | Jefferson City Swim Club |
| JCST | Jackson County Swim Team |
| JMLS | Jim McDonnell Lake Swims |
| JSCA | Japan Swimming Club Association |
| JSL | Jefferson Swim League |
| JSSL | Junipero Serra Swim League |
| KAMS | Katy Aquatic Masters Swimming |
| KAOS | A Kapiti Angels Of Swimming |
| KISS | Keep In Swimsuit Shape |
| LANES | Liquid Assets New England Swimming |
| LAPS | Lowcountry Aquatic Project Swimming |
| LGSA | Lake Geneva Swimming Association |
| LMSC | Local Masters Swim Committee |
| LMST | Lake Monticello Swim Team |
| LMST | Linn Mar Swim Team |
| LSAC | Lisburn Sub-Aqua Club |