Breggia is a Swiss-Italian river. The springs are around the Monte Generoso and Monte d'Orimento in the Val d'Intelvi at an elevation of . It enters Swiss territory between Erbonne and Scudellate, and flows along the Muggio Valley until Chiasso/Vacallo, where it again enters Italian territory, in Maslianico. Breggia then drains into Lake Como, near Villa Erba between Como and Cernobbio at an elevation of .