Agia Kyriaki (Greek: Αγία Κυριακή, Agía Kyriakí; before 1955: Kertiza[2] (Greek: Κέρτιζα, Kértiza)) is a mountain village in the municipal unit of Lasiona, Olympia, Elis, Greece.

It is situated in the southwestern foothills of Mount Erymanthos at 940 metres elevation, 4 km west of Lampeia, 7 km northeast of Antroni and 26 km northeast of Olympia.