Kazimierz Marcinkiewicz (kaˈʑimʲɛʂ mart͡ɕinˈkʲevʲit͡ʂ) (born December 20, 1959 in Gorzów Wielkopolski

Gorzów Wielkopolski

Gorzów Wielkopolski is a city in western Poland, on the Warta river. It is the biggest city in the Lubusz Voivodeship with 125,149 inhabitants...

) is a Polish

Poland

Poland , officially the Republic of Poland , is a country in Central Europe bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north...

 conservative politician who served as Prime Minister of Poland from October 31, 2005 to July 14, 2006. He was a member of the Law and Justice

Law and Justice

Law and Justice , abbreviated to PiS, is a right-wing, conservative political party in Poland. With 147 seats in the Sejm and 38 in the Senate, it is the second-largest party in the Polish parliament....

 party (Prawo i Sprawiedliwość, PiS).
Marcinkiewicz graduated in 1984 from the Faculty of Mathematics, Physics and Chemistry (having studied physics

Physics

Physics is a natural science that involves the study of matter and its motion through spacetime, along with related concepts such as energy and force. More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves.Physics is one of the oldest academic...

) of the Wrocław University.