| Abbreviation | Definition |
|---|---|
| TEC | Tennis Elbow Care |
| TENE | Tennis Courts - East side |
| TENN | Tennis Courts - North side |
| TENW | Tennis Courts - West side |
| TFF | Tennis For Free |
| TFIM | Tennis Féminin Interclub Montréal |
| TIA | Tennis Industry Association |
| TIU | Tennis Integrity Unit |
| TNNS | Tennis |
| TNSW | Tennis New South Wales |
| TPI | Tennis Player Index |
| TS | Tennis Supplies |
| TSCU | Tennis Sport Club Unterfeldhaus |
| TT | Table-Tennis |
| TTA | Table Tennis Australia |
| TTA | Tallahassee Tennis Association |
| TTAM | Table Tennis Association of Malaysia |
| TTAW | Table Tennis Association of Wales |
| TTCA | Texas Tennis Coaches Association |
| TTE | Triangle Tennis Enthusiasts |