Petr Pithart (born 2 January 1941 in Kladno) is a Czech politician, lawyer and political scientist.He served as Prime Minister of the Czech Republic (then part of Czechoslovakia) from 6 February 1990 to 2 July 1992. He has sat in Senate of the Czech Republic since its inception in autumn 1996, serving as its chairman from 18 December 1996 to 16 December 1998 and from 19 December 2000 to 15 December 2004.