Janusz Waldemar Cisek (February 8, 1955 – February 28, 2020) was a Polish historian, academic lecturer, director of the Pilsudski Institute and Polish Army Museum, from 2012 to 2013 Undersecretary of State in the Ministry of Foreign Affairs.

[1] In 1993 he obtained a doctoral degree in humanities at the University of Wrocław based on the work entitled General Belarusian Branches of General Stanisław Bułak-Bałachowicz in the policy of Józef Piłsudski during the Polish-Bolshevik war (March-December 1920).

[3] After returning to Poland, he was the deputy department director at the Ministry of Culture (2001–2002) and vice president of Stalowa Wola (2002–2003).

[2] He also became the chief commander of the Strzelce Association of the Socio-Educational Organization (2008–2012), a member of the authorities of the Foundation of Former Soldiers of Special Forces GROM[4] and a member of the Polish Scientific Society in Exile.

[3] On April 24, 2013, he was dismissed after resignation, which was motivated by health reasons – the need to undergo chemotherapy in connection with leukemia.