Boy name origins & meanings Old French : Justice Boy name variations Justin Justice Justis Justino Justus Justinian Juste Justyn Jastin Jobst Jusa Just Justain Justek Justian Justinas Justinius Justinn Justins Justn Justo Justton Justukas Justun Ustin Iestyn Iustin Yustyn Family name origins & meanings Dutch and German : from a personal name, a derivative of the Breton personal name Iodoc (see Joyce), or from the personal name Just (see Just).