Roderick Orville Estwick (born June 28, 1961, in Christchurch, Christ Church, Barbados) is a former Barbadian first-class cricketer.
A fast bowler, he played for Barbados from 1982-83 to 1986-87, toured Zimbabwe with a Young West Indies team in 1983-84, and played for Transvaal from 1987-88 to 1989-90. He won the South African Cricket Annual Cricketer of the Year award in 1988 after taking 36 wickets at 16.41 in his first season in South Africa, including 4 for 47 and 4 for 63 to help Transvaal defeat Orange Free State in the final of the Castle Currie Cup. Earlier in the season he had taken 4 for 45 and 5 for 17 against Orange Free State.
His best first-class bowling figures were 6 for 68 against Leeward Islands in 1983-84. His highest score was 43 not out in the 1987-88 Castle Currie Cup final, when, batting at number 11, he added 74 for the tenth wicket with Ray Jennings.
He played as the professional for Todmorden in the Lancashire League from 1982 to 1984.
He is the half-brother of West Indian cricketer Sylvester Clarke.