The Cixerri is an Italian river in southern Sardinia province of Cagliari. It springs from Monte Croccoriga, at 313 metres (1,027 ft) above sea level, in the province of Carbonia-Iglesias. The river flows into a lake north of Iglesias and then exits the lake and flows eastward. The river is joined by a tributary north of Villamassargia and south of Musei before entering the province of Cagliari. The river flows past Siliqua and is joined by another tributary from the south.