Peiraios may refer to:

Piraeus, port of Athens Peiraios Street, a main road in Athens Peiraios 260 (venue), a venue in Athens Peiraios, a minor planet, for which see: List of minor planets: 12001–13000#658 Meanings of minor-planet names: 12001–13000#658 Peiraios, son of Klytios, namesake of the minor planet