Mladen is a South Slavic masculine given name, derived from the Slavic root mlad (from Old Slavic *moldŭ), meaning "young". The name has been in use since the Middle Ages across the southern Slavic regions, including Croatia, Serbia, Bulgaria, Macedonia, Slovenia, Bosnia, and Montenegro. Etymology The name is directly formed from the adjective mlad ("young"), common to all South Slavic languages. The root traces back to Proto-Slavic *moldъ, which also gave rise to words for youth and freshness. The name can be interpreted as a wish for the bearer to remain youthful or as a descriptor for the youngest child in a family. Cultural and Historical Usage Mladen appears in medieval history among Croat and Serbian nobility. Notable early bearers include Mladen I Šubić (died 1304), a Croatian nobleman, and Mladen II Šubić (1270–1341), who was the Ban of Bosnia. The Serbian magnate Mladen (known as vojvoda) held high rank in the Serbian Empire during the 14th century. These examples show the name's established presence in the ruling classes of the medieval Balkans. Distribution and Usage Mladen is most common in countries that speak a South Slavic language: Serbia, Croatia, Bosnia and Herzegovina, Montenegro, Macedonia, Bulgaria, and Slovenia. In Croatia, it ranked among the top 200 masculine names in recent decades. The name is also found in other Slavic communities and among emigrant populations worldwide. Related feminine forms include Mladenka (the female counterpart, predominantly used in Serbia and Croatia). Surname forms derived from the given name include Mladenovska and Mladenovski, which are patronymic surnames common among ethnic Macedonians and Bulgarians. Notable Bearers Many modern professionals bear the name, including Mladen Bartolović (1977–2026), a Bosnian footballer; Mladen Bašić (1917–2012), a renowned Croatian pianist and conductor; and Mladen Bestvina (born 1959), a Croatian-American mathematician. Athletes, musicians, and academics throughout the Balkans continue to carry the name with prominence. Meaning: "young" Origin: Slavic (South Slavic) Gender: Male Usage: Bulgarian, Croatian, Macedonian, Serbian, Slovene