A Slavic form of Basileios/Basil, ultimately from Greek 'basileus' meaning kingly or royal.
Vasilije is the Serbian form of Basil, tracing its lineage through Byzantine Greek Βασίλειος (Basileios), meaning 'royal,' 'kingly,' or 'of the king.' The Greek root basileus — king — gave English the word basilica (originally a royal hall) and the herb basil (supposedly used in royal ceremonies). As a name, Basil/Vasily/Vasilije spread across the Orthodox Christian world attached above all to one towering figure: Saint Basil the Great (329–379 AD), Archbishop of Caesarea, whose theological writings and charitable institutions shaped Eastern Christianity profoundly.
He is considered one of the Three Holy Hierarchs of Orthodox tradition. In Serbia and Montenegro, Vasilije carries a particularly beloved association: Sveti Vasilije Ostroški, Saint Basil of Ostrog (1610–1671), a Serbian Orthodox bishop whose relics rest in the Ostrog Monastery carved into a sheer cliff face in Montenegro. The saint is venerated across the Orthodox Balkans and his monastery draws pilgrims of all faiths, making Vasilije a name that resonates with both devotion and a specific Balkan cultural identity.
For Serbian families, choosing Vasilije is an act of rootedness — a way of tying a child to centuries of Orthodox spiritual heritage. Beyond the Serbian world, the name's cognates appear across Eastern Europe: Vasily in Russia, Vasile in Romania, Basil in Greece and the English-speaking world. Among the Slavic forms, Vasilije retains an especially strong and sonorous quality — the full four syllables roll out with a formal dignity that nicknames like Vasa or Vaso can soften in everyday life. It is a name that sounds like history.