Dacius \d(a)-cius\ as a boy's name is a variant of Dacey (Irish, Gaelic, Latin), and the meaning of Dacius is "from the south; from Dacia".

The baby name Dacius sounds like Theseus. Other similar baby names are Darius, Dacio, Darrius, Darious, Darias, Davis, Davies, Daviss, Decimus, Delius, Lucius and Tacitus.