| Abbreviation | Definition |
|---|---|
| LPTT | Ligue de Picardie de Tennis de Table |
| LTA | Lawn Tennis Association |
| LTA | Louisiana Tennis Association |
| LTAA | Lawn Tennis Association of Australia |
| LTAM | Lawn Tennis Association Malaysia |
| LTAM | Lawn Tennis Association of Malawi |
| LTF | Libertyville Tennis and Fitness |
| LTTC | Linden Table Tennis Committee |
| LTTF | Lebanese Table Tennis Federation |
| LVET | La Vie En Tennis |
| MCTA | Montgomery County Tennis Association |
| MCTA | Motor City Tennis Alliance |
| MCTI | Music City Tennis Invitational |
| MDTC | Memorial Drive Tennis Club |
| MITA | Massachusetts Indoor Tennis Association |
| MITC | Monadnock Indoor Tennis Club |
| MMTL | Midwest Metro Tennis League |
| MNT | Monday Night Tennis |
| MNTC | McCormack Nagelsen Tennis Center |
| MNTC | McCormack–Nagelsen Tennis Center |