Players ATPWTA
| Name | Country |
|---|---|
| Alexander Kudryavtsev | RUS |
| Nicola Kuhn | GER |
| Mikhail Kukushkin | KAZ |
| Shusaku Kumakura | JPN |
| Andrey Kumantsov | RUS |
| Sameer Kumar | USA |
| Jan Kuncik | CZE |
| Igor Kunitsyn | RUS |
| Souma Kuribayashi | JPN |
| Alexandr Kushakov | UKR |
| Gary Kushnirovich | USA |
| Sanetulla Kutibaev | UZB |
| Dimitar Kutrovsky | BUL |
| Dimitar Kuzmanov | BUL |
| Alex Kuznetsov | USA |
| Andrey Kuznetsov | RUS |
| Mykhailo Kvantaliani | UKR |
| Thai-Son Kwiatkowski | USA |
| Oh-Hee Kwon | KOR |
| Soon Woo Kwon | KOR |
| Kevin Kylar | CAN |
| Patrick Kypson | USA |
| Sergis Kyratzis | CYP |
| Nick Kyrgios | AUS |