Beat Breu (born 23 October 1957, in St. Gallen) is a Swiss former road bicycle racer. In 1982 Tour de France he won the prestigious stage on Alpe d'Huez, as well as another mountain stage finishing in Saint-Lary-Soulan, and finished sixth overall. This double strike earned Beat Breu the nickname "Mountain Flea". He also won Tour de Suisse two times and a stage in 1981 Giro d'Italia. In later life in 2019 he fulfilled his childhood dream of having his own circus.