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

The baby name Basilius sounds like Basileios and Bazeelius. Other similar baby names are Vasilius, Vasilus, Vasilis, Vasilios, Basilio, Basilie, Basilides and Basilic.