Jan Vacek
Jan Vacek is a retired professional male tennis player from the Czech Republic.
Vacek turned professional in 1999 and won a single title at the Brazil Open in 2001. He reached the fourth round at the 2002 Wimbledon Championships. Vacek's career-high singles ranking was World No. 61.
ATP Tour finals
Singles (1 win)
Doubles (1 loss)
| Result | W/L | Date | Tournament | Surface | Partner | Opponents | Score |
| Loss | 1. | Sep 2004 | 's-Hertogenbosch, Netherlands | Grass |  Lars Burgsmüller |  Martin Damm Cyril Suk | 3–6, 7–6, 3–6 |