Players ATPWTA
| Name | Country |
|---|---|
| Stefanos Tsitsipas | GRE |
| George Tsivadze | GEO |
| Jo-Wilfried Tsonga | FRA |
| Pavel Tsoy | UZB |
| Alexandre Tsuchiya | BRA |
| Li Tu | AUS |
| Igor Tubic | SWE |
| Roman Tudoreanu | MDA |
| Gabriel Tumasonis | BRA |
| Nicolo Turchetti | ITA |
| Thales Turini | BRA |
| Mert Naci Turker | TUR |
| Dmitry Tursunov | RUS |
| Marshall Tutu | GBR |
| Julius Tverijonas | LTU |
| Maxim Tybar | BLR |
| Daniel Tyntaryov | ISR |
| Evgeny Tyurnev | RUS |
| Jordan Ubiergo | FRA |
| Joseph Imeh Ubon | NGR |
| Kaichi Uchida | JPN |
| Yasutaka Uchiyama | JPN |
| Danai Udomchoke | THA |
| Kaito Uesugi | JPN |
| Benjamin Ugarte | CHI |
| Romai Ugarte | CHI |
| Camilo Ugo Carabelli | ARG |
| Daniel Uhlig | GER |
| Edmundo Ulloa | PER |
| Adrian Ungur | ROU |
| Mike Urbanija | SLO |
| Eduardo Andres Urgell Bustamante | ESP |
| Mariano Urli | ARG |
| Laslo Urrutia Fuentes | CHI |
| Vadym Ursu | UKR |
| Ricardo Urzua-Rivera | CHI |
| Atsushi Ushida | JPN |
| Dennis Uspensky | USA |
| Vaja Uzakov | UZB |
| Vladimir Uzhylovsky | UKR |
| Valentin Vacherot | FRA |
| Ondrej Vaculik | CZE |
| Simone Vagnozzi | ITA |
| Martin Vaisse | FRA |
| Peter Vajda | SVK |
| Neishit Vakil | IND |
| Mikhail Vaks | RUS |
| Marek Valasik | SVK |
| Duarte Vale | POR |
| Daniel Valent | SUI |