In antiquity, publicans (Greek τελώνης telōnēs; Latin publicanus (singular); publicani (plural)) were public contractors, in which role they often supplied the Roman legions and military, managed the collection of port duties, and oversaw public building projects. In addition, they served as tax collectors for the Republic (and later the Roman Empire), bidding on contracts (from the Senate in Rome) for the collection of various types of taxes.