| Birth Date: | September 11, 1972 |
| Birth Place: | Chomutov, Czechoslovakia |
| Height Ft: | 6 |
| Height In: | 6 |
| Weight Lb: | 265 |
| Position: | Defence |
| Shoots: | Left |
| Played For: | HC Litvínov HC Slavia Praha HC Znojemští Orli Lillehammer IK |
| Career Start: | 1990 |
| Career End: | 2011 |
Petr Martínek (born September 11, 1972) is a Czech former professional ice hockey defenceman. He is currently the head coach of Piráti Chomutov of the Krajske hokejove prebory.
Martínek played 154 games in the Czech Extraliga for HC Litvínov, HC Slavia Praha and HC Znojemští Orli.[1] He also played one season in Norway's UPC-ligaen for Lillehammer IK during the 2004–05 season.