David Ewart Howard (born 5 March 1918) is a Canadian retired sailor who competed in the 1956 Summer Olympics. He competed in the dragon event on a team with his brother Cliff Howard and Donald Tytler. Howard served in World War II with the Royal Canadian Navy, reaching the rank of lieutenant. As of 27 July 2021, the centenarian is the second-oldest living Olympian, aged 103. Uruguayan Félix Sienra, who is coincidentally also a former sailor, is the oldest living Olympian, aged 106.