Players ATPWTA
| Name | Country |
|---|---|
| Ben Shelton | USA |
| Alexander Shevchenko | RUS |
| Ferdun Shevkedov | BUL |
| Masato Shiga | JPN |
| Sho Shimabukuro | JPN |
| Geon Ju Shin | KOR |
| Sergey Shipilov | UZB |
| Shonigmatjon Shofayziyev | UZB |
| Matthew Short | GBR |
| Samuel Shropshire | USA |
| Thomas Shubert | USA |
| Yaraslav Shyla | BLR |
| George Siapatis | GRE |
| Alberto Sibona | ITA |
| Romain Sichez | FRA |
| Alexandre Sidorenko | FRA |
| Elbert Sie | INA |
| Marc Sieber | GER |
| Kevin Sielmann | ESP |
| Mattias Siimar | EST |
| Igor Sijsling | NED |
| Adrian Sikora | SVK |
| Alex Silcock | AUS |
| Henrik Sillanpaa | FIN |
| Rogelio Siller | MEX |
| Caio Silva | BRA |
| Frederico Ferreira Silva | POR |
| Julio Silva | BRA |
| Cameron Silverman | USA |
| Florian Simbozel | FRA |
| Juraj Simcak | SVK |
| Gilles Simon | FRA |
| Tobias Simon | GER |
| Fred Simonsson | SWE |
| David Simunek | CZE |
| Dong-Hak Sin | KOR |
| San Hui Sin | KOR |
| Dalwinder Singh | IND |
| Karunuday Singh | IND |
| Sanam Singh | IND |
| Digvijay Singh Mehta | IND |
| Nitin Kumar Sinha | IND |
| Riccardo Sinicropi | ITA |
| Henrik Sinkko | FIN |
| Jannik Sinner | ITA |
| Peerakiat Siriluethaiwattana | THA |
| Stjepan Sisko | CRO |
| Artem Sitak | NZL |
| Rudolf Siwy | CZE |
| Adam Skalsky | GBR |