Šimun is a Croatian male given name, equivalent to Simon. It is also a family name in Croatia and Slovakia. Notable people with the name include:
Given name Šimun Kožičić Benja ( – 1536), Croatian nobleman Šimun Katalinić (1889–1977), Croatian rower Šimun Milinović (1835–1910), Croatian Roman Catholic priest Šimun Debelić (1902–1945), Croatian veterinarian Šimun de Michieli-Vitturi, Dalmatian politician
Surname Eduard Šimun, Slovak ice hockey player Nenad Šimun, known as Target (rapper), Croatian rapper
See also Simun (disambiguation) Šime Šimunić Šimunović