Players ATPWTA
| Name | Country |
|---|---|
| Miki Jankovic | SRB |
| Yannick Jankovits | FRA |
| Bojan Jankulovski | MKD |
| Jerzy Janowicz | POL |
| Benjamin Janse van Rensburg | RSA |
| Robert Januch | SVK |
| Maxime Janvier | FRA |
| Chi-Shan Jao | TPE |
| Nicolas Jara-Lozano | ARG |
| Nicolas Jarry | CHI |
| Omar Jasika | AUS |
| Lukas Jastraunig | AUT |
| Giorgi Javakhishvili | GEO |
| Mohit Mayur Jayaprakash | IND |
| Malek Jaziri | TUN |
| Mehdi Jdi | MAR |
| Roman Jebavy | CZE |
| Hendrik Jebens | GER |
| Mircea-Alexandru Jecan | ROU |
| George Jecminek | CAN |
| Mikolaj Jedruszczak | POL |
| Jarmere Jenkins | USA |
| In-Kyo Jeong | KOR |
| Suk-Young Jeong | KOR |
| Young-Hoon Jeong | KOR |
| Slobodan Jevtic | SRB |
| Alexander Jhun | GBR |
| Rafael Jodar | ESP |
| Facundo Jofre | ARG |
| David Johansson | SWE |
| Joachim Johansson | SWE |
| Morgan Johansson | SWE |
| Jakob Johansson-Holm | SWE |
| Collin Johns | USA |
| Eric Johnson | USA |
| Luke Johnson | GBR |
| Steve Johnson | USA |
| Tom Jomby | FRA |
| Ronan Joncour | FRA |
| Greg Jones | AUS |
| Nicholas Jones | GBR |
| David Jorda Sanchis | ESP |
| Kevin Jordi | SUI |
| Ricardo Jorge | POR |
| Tomislav Jotovski | MKD |
| Romain Jouan | FRA |
| Javier Jover Maestre | ESP |
| Paul Jubb | GBR |
| Deivids Juksa | LAT |
| Woong-Sun Jun | KOR |