Calin Constantin Anton Popescu-Tariceanu (Romanian pronunciation: [k?'lin konstan'tin an'ton po'pesku t?ri't?e?anu]; born 14 January 1952) is a Romanian politician who was Prime Minister of Romania from 29 December 2004 to 22 December 2008.
He was also president of the National Liberal Party (PNL) and the vice-president of the European Liberal Democrat and Reform Party (ELDR), two positions he assumed in 2004.
He was the President of the Senate, second position in the Romanian state, from 10 March 2014 until he resigned on 2 September 2019, having previously resigned from the PNL party, becoming an independent senator.
In July 2014, he established the Liberal Reformist Party.