Phazemon (Greek, Ancient (to 1453);: Φαζημών), also known as Thermai Phazemoniton, was a town in the west of ancient Pontus, south of the Gazelonitis, and north of Amasia; it contained hot mineral springs. Pompey, after his victory over Mithridates, planted a colony there, and changed its name into Neapolis, from which the whole district was called Neapolitis, having previously been called Phazemonitis.
Its site is located near Havza, Asiatic Turkey.