Pollux () is a mountain in the Pennine Alps on the border between Valais, Switzerland and the Aosta Valley in Italy. It is the lower of a pair of twin peaks (), the other being Castor, named after the Gemini twins of Roman mythology. Pollux' peak is at an elevation of . It is separated from Castor by a pass at , named Passo di Verra in Italian, Col de Verra in French and Zwillingsjoch in German.