Olenia

Olenia (Ωλενία) is a former municipality in Achaea, West Greece, Greece. Since the 2011 local government reform it is part of the municipality West Achaea, of which it is a municipal unit. The municipal unit has an area of 189.534 km2. Population 4,303 (2021). The seat of the municipality was in Lousika. The municipality is named after the ancient Achaean town Olenus.

Subdivisions
The municipal unit Olenia is subdivided into the following communities (constituent villages in brackets):
 * Achaiko
 * Agios Nikolaos Kralis (Kalamaki, Agios Nikolaos, Avgeraiika, Thomaiika, Poimenochori)
 * Agios Stefanos (Agios Stefanos, Palaia Peristera, Fylakes)
 * Ano Soudenaiika
 * Arla
 * Chaikali (Chaikali, Katsaitaiika, Kounelaiika)
 * Charavgi (Charavgi, Neochori, Pigadia)
 * Flokas (Flokas, Zisimaiika)
 * Fostaina
 * Galanaiika
 * Gkaneika
 * Kato Mazaraki
 * Lousika (Lousika, Spaliaraiika, Ypsili Rachi)
 * Mitopoli (Mitopoli, Komi, Souvaliotaiika)
 * Portes
 * Santomeri (Santomeri, Ampelakia, Polylofo)