Marcel Buysse (Wontergem, 11 November 1889- Ghent, 3 October 1939) was a Belgian racing cyclist.
After finishing fourth in the 1912 Tour de France, Buysse led the general classification for two days until a broken handlebar cost him dearly. Despite winning six stages in the 1913 Tour de France, he could only finish in 3rd place, 3 hours, 30 minutes and 55 seconds behind Philippe Thys.
He finished third in the 1919 Giro d'Italia.
Marcel was the brother of Jules Buysse and Tour de France-winner Lucien Buysse, and the father of cyclists Norbert Buysse and Albert Buysse.