Janusz Waldemar Cisek (February 8, 1955 – February 28, 2020) was a Polish historian and academic lecturer. Cisek was born in Stalowa Wola, Poland. He was a member of the Polish Peasants' Party. Cisek was Executive Director of the Józef Piłsudski Institute of America from 1992 to 2000. He was Under-Secretary of State of the Republic of Poland from 2012 to 2013. 