Allagi (Greek: Αλλαγή), also Allayi, Alagi, rarely Alai is a community located less than 1 km south of GR-9A/E55 in the northern part of the prefecture of Messenia. It is located on a major highway linking Kalamata and Corinth, the GR-7/E55 and E65. Distance from Megalopoli is about 20 km S (old about 25 km S), about 35 km E of Kyparissia, Pyrgos is about 90 km SE and about 30 km N of Kalamata.