| Jan Blažek | |
| Height: | 1.81 m |
| Birth Date: | 1988 3, df=yes |
| Birth Place: | Trutnov, Czechoslovakia |
| Currentclub: | TJ Slavoj Veleň |
| Position: | Forward |
| Youthyears1: | 1998–1999 |
| Youthyears2: | 1999–2000 |
| Youthyears3: | 2000–2002 |
| Youthyears4: | 2002–2005 |
| Youthclubs1: | FK Trutnov |
| Youthclubs2: | SK Hradec Králové |
| Youthclubs3: | FK Trutnov |
| Youthclubs4: | Slovan Liberec |
| Years1: | 2005–2013 |
| Years2: | 2008 |
| Years3: | 2008–2011 |
| Years4: | 2011–2012 |
| Years5: | 2013–2014 |
| Years6: | 2014 |
| Years7: | 2014 |
| Years8: | 2014–2015 |
| Years9: | 2015 |
| Years10: | 2015–2016 |
| Years11: | 2016 |
| Years12: | 2016 |
| Years13: | 2017–2018 |
| Years14: | 2018 |
| Years15: | 2018–2019 |
| Years16: | 2019 |
| Years17: | 2019–2021 |
| Years18: | 2021 |
| Years19: | 2021–2022 |
| Years20: | 2022–2023 |
| Years21: | 2023 |
| Years22: | 2023– |
| Clubs1: | Slovan Liberec |
| Clubs2: | → Slavia Prague (loan) |
| Clubs3: | → Larissa (loan) |
| Clubs4: | → Slavia Prague (loan) |
| Clubs5: | Apollon Smyrnis |
| Clubs6: | Podbeskidzie Bielsko-Biała |
| Clubs7: | Podbeskidzie II |
| Clubs8: | Aiginiakos |
| Clubs9: | Dukla Prague |
| Clubs10: | Slavoj Vyšehrad |
| Clubs11: | BV Cloppenburg |
| Clubs12: | MFK Frýdek-Místek |
| Clubs13: | Litoměřicko |
| Clubs14: | TJ Vyšehořovice |
| Clubs15: | SK Úvaly |
| Clubs16: | SK Union Vršovice |
| Clubs17: | TJ Spoje Praha |
| Clubs18: | FK Zbuzany |
| Clubs19: | SV Neukirchen |
| Clubs20: | FC Horky nad Jizerou |
| Clubs21: | TJ Baník Žacléř |
| Clubs22: | TJ Slavoj Veleň |
| Caps1: | 93 |
| Caps2: | 7 |
| Caps3: | 35 |
| Caps4: | 14 |
| Caps5: | 5 |
| Caps6: | 5 |
| Caps7: | 1 |
| Caps8: | 2 |
| Caps9: | 8 |
| Caps10: | 0 |
| Caps11: | 5 |
| Caps12: | 2 |
| Caps13: | 6 |
| Caps18: | 1 |
| Caps19: | 8 |
| Goals1: | 23 |
| Goals2: | 1 |
| Goals3: | 3 |
| Goals4: | 2 |
| Goals5: | 0 |
| Goals6: | 1 |
| Goals7: | 0 |
| Goals8: | 0 |
| Goals9: | 0 |
| Goals10: | 0 |
| Goals11: | 0 |
| Goals12: | 0 |
| Goals13: | 0 |
| Goals18: | 0 |
| Goals19: | 0 |
| Nationalyears1: | 2004 |
| Nationalteam1: | Czech Republic U16 |
| Nationalcaps1: | 3 |
| Nationalgoals1: | 1 |
| Nationalyears2: | 2004–2005 |
| Nationalteam2: | Czech Republic U17 |
| Nationalcaps2: | 16 |
| Nationalgoals2: | 10 |
| Nationalyears3: | 2005 |
| Nationalteam3: | Czech Republic U18 |
| Nationalcaps3: | 1 |
| Nationalgoals3: | 0 |
| Nationalyears4: | 2005–2007 |
| Nationalteam4: | Czech Republic U19 |
| Nationalcaps4: | 18 |
| Nationalgoals4: | 6 |
| Nationalyears5: | 2006–2008 |
| Nationalteam5: | Czech Republic U21 |
| Nationalcaps5: | 5 |
| Nationalgoals5: | 0 |
| Nationalyears6: | 2009–2010 |
| Nationalteam6: | Czech Republic |
| Nationalcaps6: | 3 |
| Nationalgoals6: | 0 |
| Club-Update: | 22 November 2023 |
Jan Blažek (born 20 March 1988) is a Czech footballer who plays as a forward for TJ Slavoj Veleň.
Blažek is known as a very talented as well as a somewhat controversial player, due to his conflicts with coaches and alcohol consumption. On his web site he stated his motto: Děvky, chlast a prcání (hookers, booze and fucking). The site also included many photographs of him drinking rum with cola.[1] After Blažek's transfer to Slavia, the web site gained some attention of the media, resulting in motto being changed to věř v sám sebe (trust in yourself) and the controversial photographs were removed.[2]
In July 2011 Blažek returned to his mother club FC Slovan Liberec.[3] On 24 July 2012, Blažek scored a goal against Kazakhstani club Shakhter Karagandy at the very end of the period of extra time to level the result at 1–1 and enable his team to progress to the next round of the UEFA Champions League by an aggregate score of 2–1. He spent time at Greek second division side Aiginiakos in the autumn part of the 2014–15 season, before joining FK Dukla Prague on loan in February 2015.[4]
On 15 November 2009, Blažek made his first appearance for the national team in a friendly game against United Arab Emirates.