Mases (Ancient Greek: Μάσης, ἡ Μάσητος[1]) was a city in the district Hermionis, on the Argolic peninsula, in ancient Argolis.[2] It is mentioned by Homer as part of Diomedes's kingdom in the Catalogue of Ships in the Iliad, along with Aegina.[3] In the time of Pausanias, it was used as a harbour by Hermione.[4]
Its site is tentatively located near the modern Koilada,[5][6] northeast of Kranidi.