Agia Eirini (Greek: Άγια Ειρήνη, for Saint Irene) is a community in the municipal unit of Eleios-Pronnoi in the southeastern part of the island of Cephalonia, Greece. It is situated in an inland valley, at about 90 m elevation. It is 2 km south of Tzanata, 3 km southeast of Xenopoulo, 3 km north of Pastra and 4 km southwest of Poros. It is located on the road connecting Poros with Argostoli. It was historically known as Arakli (Αράκλη), a name related to Heracles according to local legends, and there's a statue of Heracles fighting a lion in the village.. Ancient coins minted in the wider region of Pronnoi also depict the club of Heracles.