Planitero (Greek: Πλανητέρο) is a mountain village in the municipal unit of Lefkasi, Achaea, Greece. It is situated in the southwestern part of the Chelmos (Aroania) mountains. Its population is 354 people (2001 census). Its elevation is 700 m. Planiteri is 1.5 km north of Armpounas, 6 km northeast of Kleitoria and 12 km southeast of Kalavryta. The source of the river  Aroanios is near Planitero.