Zygmunt, Zigmunt, Zigmund and spelling variations thereof are masculine given names and occasionally surnames. People so named include:
Sigismund I the Old (1467-1548), Zygmunt I Stary in Polish, King of Poland and Grand Duke of Lithuania
Sigismund II Augustus (1520-1572), Zygmunt II August in Polish, King of Poland and Grand Duke of Lithuania, only son of Sigismund I
Sigismund III Vasa (1566-1632), Zygmunt III Waza in Polish, King of Poland, Grand Duke of Lithuania, monarch of the united Polish–Lithuanian Commonwealth and King of Sweden
Zygmunt Grudziński (1560–1618), Polish nobleman, voivode (ruler) of Rawa
Zygmunt Grudziński (1568–1653), Polish nobleman, voivode of Innowrocław and Kalisz
Zygmunt Kazanowski (1563–1634), Polish nobleman, soldier and magnate in the Polish-Lithuanian Commonwealth
Zygmunt Tarło (c. 1561 or 1562–1628), Polish–Lithuanian nobleman
Zygmunt Bauman (born 1925), Polish sociologist
Zygmunt Bohusz-Szyszko (1893-1982), Polish general
Zygmunt Chychła (1926-2009), Polish boxer and 1952 Olympic welterweight champion
Zygmunt Gloger (1845–1910), Polish historian, archaeologist, geographer and ethnographer
Zygmunt Grudziński (1870–1929), Polish radiologist
Zygmunt Heljasz (1908–1963), Polish shot putter and discus thrower
Zygmunt Hübner (1930–1989), Polish film actor
Zygmunt Kalinowski (born 1949), Polish former football goalkeeper
Zygmunt Kamiński (1933-2010), Polish Roman Catholic archbishop
Zygmunt Konieczny (born 1937), Polish composer of theatre and film music
Zygmunt Krasiński (1812-1859), Polish poet and nobleman
Zygmunt Kukla (1948-2016), Polish footballer
Zygmunt Malanowicz (born 1938), Polish film actor
Zygmunt Maszczyk (born 1945), Polish retired footballer
Zigmund Red Mihalik (1916-1996), American basketball player and referee, member of the Basketball Hall of Fame
Zygmunt Miłkowski (1824-1915), Polish romantic writer and politician
Zygmunt Miłoszewski (born 1976), Polish writer and former journalist and editor
Žigmund Pálffy (born 1972), retired National Hockey League player from Slovakia
Zygmunt Rumel (1915-1943), Polish poet and member of the Polish resistance in World War II
Zygmunt Smalcerz (born 1941), Polish weightlifting coach and retired weightlifter, 1972 Olympic flyweight champion
Zygmunt Solorz-Żak (born 1956), Polish businessman and billionaire
Zygmunt Stojowski (1870–1946), Polish pianist and composer
Zigmunt Ziggy Switkowski (born 1948), Australian businessman and nuclear physicist
Zygmunt Szweykowski (1894–1978), historian of Polish literature
Zigmunt Zygi Wilf (born 1950), owner of the Minnesota Vikings National Football League team
Zygmunt Florenty Wróblewski (1845–1888), Polish physicist and chemist
Zygmunt Zalcwasser (1898–1943), Polish mathematician and Holocaust victim
Zygmunt Zaremba (1895-1967), Polish socialist activist and publicist
Zygmunt Zieliński (1858–1925), Polish general
Antoni Zygmund (1900-1992), Polish mathematician
Paweł Zygmunt (born 1972), Polish retired speed skater
Ted Zigmunt (born 1951), American politician
Zygmunt Wikipedia (Text) CC BY-SA