Boy name origins & meanings Old French : Justice Boy name variations Justin Justice Justis Justino Justus Justinian Juste Justyn Jastin Jobst Jost Jusa Just Justain Justek Justian Justinas Justinius Justinn Justins Justn Justton Justukas Justun Ustin Iestyn Iustin Yustyn Family name origins & meanings Spanish and Portuguese : from the personal name Justo, Latin Justus, meaning ‘honorable’, ‘upright’ (see Just).