Zygmunt Stanisław Marek (born March 19, 1872, in Kraków, died 8 November 1931 in Kraków) was a Polish socialist politician. After graduating from gymnasium he studied law. He joined the Polish Social Democratic Party of Galicia (PPSD) in 1890. Marek was a chief editor of the newspaper Więzien polityczny (Political prisoner) and Naprzód (Forward) during World War I. In 1919, after Poland regained independence after years of partitions, he joined the united Polish Socialist Party (PPS). Elected Sejm member the same year, he became chairman of the PPS caucus, replacing Norbert Barlicki in 1926. O