Vasilius \v(a)-si-lius\ as a boy's name is a variant of Basil (Greek), and the meaning of Vasilius is "royal, kingly".

The baby name Vasilius sounds like Vasilus, Vasilis and Vasilios. Other similar baby names are Basilius, Vasilije, Vasili, Vasileos, Vasilij and Vasileios.