Mariusz Błaszczak

Mariusz Błaszczak
Official portrait, 2015
Deputy Prime Minister of Poland
In office
22 June 2022  21 June 2023
Serving with Henryk Kowalczyk
Prime MinisterMateusz Morawiecki
Preceded byJarosław Kaczyński
Succeeded byJarosław Kaczyński
Minister of National Defence
In office
9 January 2018  13 December 2023
Prime MinisterMateusz Morawiecki
Preceded byAntoni Macierewicz
Succeeded byWładysław Kosiniak-Kamysz
Minister of the Interior and Administration
In office
16 November 2015  9 January 2018
Prime Minister
Preceded by
Succeeded byJoachim Brudziński
Parliamentary leader of Law and Justice
Assumed office
13 November 2023
In office
3 August 2010  11 November 2015
Member of the Sejm
Assumed office
5 November 2007
ConstituencyNo. 20 (Warsaw II)
Minister without portfolio
In office
27 March 2007  16 November 2007
Prime MinisterJarosław Kaczyński
Chief of the Prime Minister's Chancellery
In office
31 October 2005  16 November 2007
Prime Minister
DeputyPiotr Tutak
Preceded bySławomir Cytrycki
Succeeded byTomasz Arabski
Personal details
Born (1969-09-19) 19 September 1969
Legionowo, Poland
Political partyLaw and Justice
Alma materUniversity of Warsaw
Signature

Mariusz Błaszczak (pronounced [ˈmar.juʂ ˈbwaʂ.t͡ʂak] ; born 19 September 1969) is a Polish politician, historian, local government representative and civil servant. A member of the Sejm continuously since 2007 and a prominent figure of the Law and Justice party, he held various government positions in the years 2005–2007 and 2015–2023.

Błaszczak served as Minister of National Defence from 2018 to 2023 and Minister of the Interior and Administration from 2015 to 2018. He was also Deputy Prime Minister between 2022 and 2023. In the previous Law and Justice government, he was Chief of the Prime Minister's Chancellery from 2005 to 2007, and minister without portfolio in the year 2007. He has been a parliamentary leader of Law and Justice since 2023, and previously between 2010 and 2015.