| Abbreviation | Definition |
|---|---|
| MSTA | McLean Swimming and Tennis Association |
| MTSL | Michigan Team Swim League |
| MYB | Montgomery YMCA Barracuda Swim Team |
| NCSA | National Club Swimming Association |
| NDL | National Dive League |
| NHSA | New Hampshire Swim Association |
| NPTS | National Plan for Teaching Swimming |
| NRST | Nanaimo Riptide Swim Team |
| NSPD | Northeastern Swimming Pool Distributors |
| NSPF | National Swimming Pool Foundation |
| NVSL | Northern Virginia Swimming League |
| OKS | Oklahoma Swimming, Inc. |
| OPST | Ocean Pines Swim Team |
| OSOA | Ontario Swimming Officials Association |
| OWS | Open Water Swim |
| OWSA | Open Water Swim Academy |
| PDSA | Pacific Dolphin Swim Association |
| PDST | Pacific Dragons Swim Team |
| PDST | Philomath Dolphin Swim Team |
| PHAST | Port Hawkesbury Antigonish Swim Team |