Aroania (Greek: Αροάνια), also known as Chelmos (Χελμός, from South Slavic chlmo, summit), is a mountain range in Achaea, Peloponnese, Greece. At 2,355 m elevation, Aroania is the third highest mountain of the Peloponnese, after Taygetus and Kyllini, and the highest in Achaea. The largest town near the mountain is Kalavryta.