Aenianes

Ainis Αἰνίς
Region of Ancient Greece
View of Ainis from Mount Oeta.
The valley of Spercheios with Ainis (Aeniania).
Location	Central Greece
Major cities	Hypata, Spercheiai?
Dialects	Doric
Key periods	Hellenistic

Ainis (Ancient Greek Αἰνίς, IPA: [ajˈniːs], Modern Greek Αινίδα, IPA: [eˈniða]) or Aeniania, was a region of ancient Greece located near Lamia in modern Central Greece, roughly corresponding to the upper Valley of Spercheios.

The region takes its name from the tribe of the Ainianians, who dwelt in the area. The name Ainis first occurs in Roman times; the only known earlier name of the region was "land of the Aenianians", Ainianōn khōra (Theopompus).

Ainis is located in the upper Spercheios valley, bordering with Dolopia in the west, Oita in the south, Malis in the east and Achaia Phthiotis in the north. The exact borders with Oita and Malis have never been established. The river Spercheios floats through the region on its way down to the Maliac Gulf, and is joined in Ainis by its chief tributary the Inachos. The area is limited to the north by the Othrys mountains, and to the west by a spur of the Pindus mountains, with the peak of Tymphrestus visible from most of the region. To the south lies the peaks of Goulinas and Mount Oeta, separated by the river Inachus.