Erastus \e-ras-tus, er(a)-stus\ as a boy's name is of Greek origin, and the meaning of Erastus is "loving". Biblical: Erastus was a missionary sent out by Saint Paul.

Erastus has 3 variant forms: Eraste, Erastos and Rastus.

Baby names that sound like Erastus are Aristos and Orestes.