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

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