Sergei Demekhine
| Country (sports) | Russia |
|---|---|
| Residence | Moscow, Russia |
| Born | 30 March 1984 Kursk, Russian SFSR, Soviet Union |
| Height | 1.92 m (6 ft 3+1⁄2 in) |
| Turned pro | 2001 |
| Retired | 2009 (last match played) |
| Plays | Right–handed |
| Prize money | $25,848 |
| Singles | |
| Career record | 37–52 |
| Career titles | 1 ITF |
| Highest ranking | No. 673 (30 July 2007) |
| Doubles | |
| Career record | 106–69 |
| Career titles | 8 ITF |
| Highest ranking | No. 438 (17 October 2005) |
Sergei Gennadievich Demekhine (Russian: Сергей Геннадьевич Демёхин; born 30 March 1984) is a Russian tennis coach and former professional player.