| Marek Biernacki | |
| Order: | Minister of Justice |
| Term Start: | 6 May 2013 |
| Term End: | 22 September 2014 |
| President: | Bronisław Komorowski |
| Primeminister: | Donald Tusk |
| Predecessor: | Jarosław Gowin |
| Successor: | Cezary Grabarczyk |
| Term Start2: | 7 October 1999 |
| Term End2: | 19 October 2001 |
| President2: | Aleksander Kwaśniewski |
| Primeminister2: | Jerzy Buzek |
| Term Start3: | 25 September 2005 |
| Birth Date: | 1959 4, df=yes |
| Birth Place: | Sopot, Poland |
| Party: | Solidarity Electoral Action (1997–2001), Civic Platform (2005–2018),Polish Coalition (from 2019) |
| Profession: | Liquidator, politician |
Marek Biernacki (born 28 April 1959 in Sopot) is a Polish lawyer and politician. Biernacki previously served as the Minister of Justice in the cabinet of Prime Minister Donald Tusk between 2013 and 2014 and the Minister of Internal Affairs and Administration under the government of Prime Minister Jerzy Buzek between 1999 and 2001. He was expelled from Civic Platform in January 2018.[1]