Dennis Arlen Wainwright (17 November 1935 – December 2024) was a Bermudian cricketer who played as a right-handed batsman and a wicket-keeper. He played one first-class cricket match for Bermuda against New Zealand in 1972. It was the maiden first-class match to be played by the Bermuda cricket team. As well as playing cricket, Wainwright was the goalkeeper for the Bermuda national football team.