Efigenius \e-fige-nius, ef(i)-genius\ as a boy's name is a variant of Efigenio (Greek) and Eugene (Greek), and the meaning of Efigenius is "well-born, noble".

The baby name Efigenius sounds like Efigenios, Ephigenius and Ifigenios. Other similar baby names are Eugenius, Ephigenios, Eugenios and Iphigenius.