Acilisene (Ancient Greek: Ἀκιλισηνή, romanized: Akilisēnḗ), known as Ekegheats or Yekeghyats (Old Armenian: Եկեղեաց, romanized: Ekełeac’) in Armenian, was a region of the Upper Armenia province of historical Armenia.
It was a strip of land along the Upper Euphrates or Arsanias roughly corresponding to today's Erzincan Province of Turkey.
Its main cities were Erznka (today's Erzincan, Turkey) and Ani-Kamakh (today's Kemah, Turkey) near the ancient necropolis of the Arsacid kings of Armenia.
[1] The Erznka valley, crossed by the Upper Euphrates, was the location of the most important pre-Christian shrine in Armenia, dedicated to the Armenian goddess Anahit.
The temple, whose site has not yet been identified, was in a settlement called Erez.