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