| Petr Mareš | |
| Birth Date: | 1991 1, df=yes |
| Birth Place: | Planá u Mariánských Lázní, Czechoslovakia |
| Currentclub: | FK RFS |
| Clubnumber: | 25 |
| Position: | Defender |
| Youthyears1: | 2000–2009 |
| Youthclubs1: | Slavia Prague |
| Years1: | 2009–2012 |
| Clubs1: | Slavia Prague |
| Caps1: | 1 |
| Goals1: | 0 |
| Years2: | 2010 |
| Clubs2: | → Hlučín (loan) |
| Caps2: | 12 |
| Goals2: | 2 |
| Years3: | 2011 |
| Clubs3: | → Vlašim (loan) |
| Caps3: | 15 |
| Goals3: | 1 |
| Years4: | 2012–2014 |
| Clubs4: | Viktoria Žižkov |
| Caps4: | 46 |
| Goals4: | 5 |
| Years5: | 2014–2016 |
| Clubs5: | Hradec Králové |
| Caps5: | 45 |
| Goals5: | 6 |
| Years6: | 2016–2020 |
| Clubs6: | Mladá Boleslav |
| Caps6: | 67 |
| Goals6: | 5 |
| Years7: | 2019–2020 |
| Clubs7: | → Teplice (loan) |
| Caps7: | 22 |
| Goals7: | 2 |
| Years8: | 2021– |
| Clubs8: | FK RFS |
| Caps8: | 99 |
| Goals8: | 16 |
| Nationalyears1: | 2006–2007 |
| Nationalteam1: | Czech Republic U16 |
| Nationalcaps1: | 9 |
| Nationalgoals1: | 2 |
| Nationalyears2: | 2007 |
| Nationalteam2: | Czech Republic U17 |
| Nationalcaps2: | 5 |
| Nationalgoals2: | 1 |
| Nationalyears3: | 2008 |
| Nationalteam3: | Czech Republic U18 |
| Nationalcaps3: | 1 |
| Nationalgoals3: | 0 |
| Nationalyears4: | 2010 |
| Nationalteam4: | Czech Republic U19 |
| Nationalcaps4: | 2 |
| Nationalgoals4: | 0 |
| Nationalyears5: | 2016– |
| Nationalteam5: | Czech Republic |
| Nationalcaps5: | 3 |
| Nationalgoals5: | 0 |
| Club-Update: | 8 May 2024 |
Petr Mareš (born 17 January 1991) is a Czech football defender who currently plays for FK RFS in Latvia. In 2016, he debuted for the Czech senior squad during a match against Denmark.[1]