John Dane III is an American Olympic sailor in the Star class. He competed in the 2008 Summer Olympics, where he finished 11th together with his son-in-law Austin Sperry. Dane almost made the Olympics in the dragon in 1968, when he took second place at the US Olympic trials in a borrowed boat. He also sailed the trials in the Soling (1972), Finn (1976) and Star (1984) classes.