Roger Ducret (2 April 1888 – 10 January 1962) was a French fencer who competed at the 1920, 1924 and 1928 Olympics. At the 1924 Summer Olympics he entered five events out of six and earned a gold or silver medal in each of them, winning individual medals in all three competitive fencing disciplines: épée, foil and sabre. During his times, only one fencer did better, the Italian Nedo Nadi won five gold medals at the 1920 Summer Olympics. During World War I Ducret was a prisoner of war. After retiring from competitions he worked as a journalist for Le Figaro, L'Echo des Sports and other newspapers.