Zygmunt Jan Kisielewski (27 March 1882 – 25 April 1942) was a Polish writer, brother of Jan August and father of Stefan. During World War I (1914–1917) he was a combatant in the Polish Legions. He was an editor of Robotnik (The Worker) from 1918 to 1925. He also authored books on social-national and military subjects. His memoir is entitled Poranek.