The Anoia (Noya in Spanish) is a river in Catalonia, Spain, most of whose course is within the comarca of the same name. Its source is in the municipality of Veciana (Anoia) at an elevation of about . It passes through Igualada and crosses the Prelitoral Range at Capellades. It then passes through Sant Sadurní d'Anoia (Alt Penedès) before joining the Llobregat from the right at  Martorell (Baix Llobregat).