| Abbreviation | Definition |
|---|---|
| BTTC | Brighton Table Tennis Club |
| BTTF | Belarus Table Tennis Federation |
| BTTL | Baguio Table Tennis League |
| BTTO | Belgian Table Tennis Open |
| BTTU | Balkan Table Tennis Union |
| BYTE | Border Youth Tennis Exchange |
| CATA | Capital Area Tennis Association |
| CBT | Brazilian Tennis Confederation |
| CCTA | Central California Tennis Association |
| CDTA | Chicago District Tennis Association |
| CHTA | Castle Hill Tennis Academy |
| CHTC | Chapel Hill Tennis Club |
| CITA | Chicagoland Indoor Tennis Association |
| CMTC | Costa Mesa Tennis Center |
| CMTO | Columbus Metropolitan Tennis Organization |
| COC | Cleveland Open Cup |
| COTA | Clarke Oconee Tennis Association |
| CPTA | Colorado Platform Tennis Association |
| CPTT | Cours Professionnels de Tennis de Table |
| CRTT | Comité du Rhône de Tennis de Table |