Władysław Marcin Kosiniak-Kamysz is a Polish physician and politician. Since 2023, he has served as the Deputy Prime Minister of Poland and the Minister of National Defence and since 2015, he has served as the chairman of the Polish People's Party (PSL). From 2011 to 2015, he was Minister of Labor and Social Affairs in the governments of Donald Tusk and Ewa Kopacz. He was a candidate for president in 2020.