Arba or ARBA may refer to:
Places Arba (Achaea), a town in ancient Achaea, Greece Arba, Friuli-Venezia Giulia, a comune (municipality) in Italy Arba, Illyria, ancient name of modern Rab in Croatia Arba, Indiana, an unincorporated community in the United States
Other uses Arba (beetle), a genus of insects in the subfamily Prioninae Arba (biblical figure), a man mentioned in the Bible Académie Royale des Beaux-Arts, a Belgian art school American Rabbit Breeders Association American Rare Breed Association, an American kennel club American Revolution Bicentennial Administration Ariba, an American software and information technology services company Roman Catholic Diocese of Arba, a titular see
See also Arba Sicula, a nonprofit society for the preservation and promotion of the Sicilian language and culture