Mitchell James Duncan (born 10 June 1991) is an Australian rules footballer for the Geelong Football Club in the Australian Football League (AFL). A versatile player at 1.88 metres (6.2 ft) tall and weighing 88 kilograms (190 lb), Duncan is able to contribute in the forward line as well as the midfield. Duncan made his AFL debut in 2010, and was nominated at the conclusion of the season for the AFLPA Best First Year Player Award.