Players ATPWTA
| Name | Country |
|---|---|
| Samir Iftikhar | PAK |
| Dragos Constantin Ignat | ROU |
| Uladzimir Ignatik | BLR |
| Alexandr Igoshin | RUS |
| Aymen Ikhlef | ALG |
| Sarvar Ikramov | UZB |
| Marsel Ilhan | TUR |
| Luka Ilic | SRB |
| Berk Iliescu | TUR |
| Juan Ignacio Iliev | ARG |
| Cem Ilkel | TUR |
| Shintaro Imai | JPN |
| Itsuki Imina | JPN |
| Denis Indondo Ilongende | COD |
| Johannes Ingildsen | DEN |
| Dominic Inglot | GBR |
| Yuichiro Inui | JPN |
| Jerome Inzerillo | FRA |
| Constantinos Ioannides | CYP |
| Guy Orly Iradukunda | BDI |
| Gerardo Irarrazabal | CHI |
| James Ireland | GBR |
| Tomas Iriarte | ARG |
| Pruchya Isarow | THA |
| Dmytro Ishtuganov | UKR |
| Temur Ismailov | UZB |
| John Isner | USA |
| Thanasit Issaraporn | THA |
| Denis Istomin | UZB |
| Tatsuma Ito | JPN |
| Yuichi Ito | JPN |
| Zach Itzstein | AUS |
| Goran Ivanisevic | CRO |
| Vladimir Ivanov | EST |
| Ilya Ivashka | BLR |
| Leonard Ivic | CRO |
| Tuki Jacobs | NAM |
| Gregoire Jacq | FRA |
| Kyrian Jacquet | FRA |
| Jack Jaede | AUS |
| Vincent Jaensch-Mueller | GER |
| Jeremy Jahn | GER |
| Srdjan Jakovljevic | SRB |
| Alexandros Jakupovic | GRE |
| Jakhongir Jalalov | UZB |
| Marek Jaloviec | CZE |
| Darko Jandric | SRB |
| Woo Hyeok Jang | KOR |
| Patryk Janik | POL |
| Miki Jankovic | SRB |