Tihomir Grozdanov
| Country (sports) | Bulgaria | 
|---|---|
| Residence | Varna, Bulgaria | 
| Born | 29 April 1987 Varna, Bulgaria  | 
| Turned pro | 2005 | 
| Retired | 2017 (last match) | 
| Plays | Right-handed | 
| Prize money | US$ 53,942 | 
| Singles | |
| Career record | 4–2 (at ATP Tour level, Grand Slam level, and in Davis Cup) | 
| Career titles | 0 0 Challengers, 4 Futures  | 
| Highest ranking | No. 394 (30 December 2013) | 
| Doubles | |
| Career record | 3–1 (at ATP Tour level, Grand Slam level, and in Davis Cup) | 
| Career titles | 0 0 Challengers, 10 Futures  | 
| Highest ranking | No. 545 (17 January 2011) | 
| Last updated on: 30 January 2021. | |
Tihomir Ruslanov Grozdanov (Bulgarian: Тихомир Русланов Грозданов, born 29 April 1987) is a former professional Bulgarian tennis player. On 30 December 2013, he reached his highest ATP singles ranking of 394 whilst his best doubles ranking was 545 on 17 January 2011.