| Jan Koukal | |
| Residence: | Prague, Czech Republic |
| Birth Date: | 20 June 1983 |
| Birth Place: | Prague, Czech Republic |
| Weight: | 72kg (159lb) |
| Turnedpro: | 2004 |
| Retired: | Active |
| Coach: | Michael Fitteni Antonin Felfel |
| Racquet: | Tecnifibre, Supreme 130 |
| Event: | Men's singles |
| Highest Ranking: | No. 39 |
| Date Of Highest Ranking: | January 2005 |
| Current Ranking: | No. 71 |
| Date Of Current Ranking: | February 2014 |
| Titles: | 21 |
| Finals: | 37 |
| Updated: | February 2014 |
Jan Koukal (born 20 June 1983 in Prague) is a professional squash player who represented Czech Republic. He reached a career-high world ranking of World No. 39 in January 2005.[1]