Hieronim is the Polish form of Hieronymus and may refer to:
Hieronim Barczak (born 1953), Polish footballer Hieronim Chodkiewicz (1500–1561), Vilnius ciwun in 1542 Hieronim Czarnowski (1834–1902), Polish chess master and activist Hieronim Dekutowski (1918–1949), a Polish boyscout and soldier, who fought in Polish September Campaign Hieronim Augustyn Lubomirski (1647–1706), Polish noble (szlachcic), magnate, politician and military commander Hieronim Morsztyn (1581–1623), Polish poet Hieronim Radziejowski (1612–1667), Polish szlachcic Hieronim Florian Radziwiłł (1715–1760), Polish-Lithuanian szlachcic Hieronim Wincenty Radziwiłł (1759–1786), Polish-Lithuanian nobleman Hieronim Jarosz Sieniawski (1516–1579), Polish noble Hieronim Wietor (c. 1480–1546/47), printer in Vienna and Kraków Hieronim Wołłowicz (died 1625), Lithuanian vice-chancellor and Lithuanian grand treasurer