Jan Jermář
| Country (sports) | Czech Republic |
|---|---|
| Born | 12 April 2000 Nový Jičín, Czech Republic |
| Height | 1.91 m (6 ft 3 in) |
| Plays | Right-handed (two-handed backhand) |
| Prize money | $20,401 |
| Singles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 0 |
| Highest ranking | No. 1489 (16 September 2024) |
| Current ranking | No. 1580 (21 April 2025) |
| Doubles | |
| Career record | 0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup) |
| Career titles | 1 Challenger, 8 ITF |
| Highest ranking | No. 309 (7 April 2025) |
| Current ranking | No. 309 (21 April 2025) |
| Last updated on: 3 May 2025. | |
Jan Jermář (born 12 April 2000) is a Czech tennis player.
Jermář has a career high ATP singles ranking of 1489 achieved on 16 September 2024. He also has a career high ATP doubles ranking of 309 achieved on 7 April 2025.
Jermář has won one ATP Challenger doubles title at the 2025 Ostra Group Open.