Agios Nikolaos is a village in Argostoli Municipality, in the regional unit of Cephalonia, in the region of Ionian Islands, Greece. Agios Nikolaos lies in the Cephalonia mountains, on the island of Cephalonia. It has 81 inhabitants (2021). The nearest city is Agrinio, 79 km to the northeast. Beaches nearby: Ragia Beach (4.7 km), Central Square (5.7 km), Limenia Beach (7.7 km). Among the landmarks around are Castle of Saint George (14.5 km), Cranii (17.3 km) and Saint Gerasimos Monastery (11.0 km). Among the natural features are Melissani Cave (12.8 km) and Drogaratis cave (10.1 km).
Also written Άγιος Νικόλαος.