Benedictus Antonius Maria "Dick" Coster (born 19 June 1946 in Leiden) is a sailor from the Netherlands. Since the Netherlands did boycott the Moscow Olympic Games Coster represented his National Olympic Committee at the 1980 Summer Olympics in Tallinn, USSR under the Dutch NOC flag. With Geert Bakker as helmsman and fellow crew member Steven Bakker, Coster took the 5th place in the Soling. During the 1976 Olympics Coster was substitute for the Dutch Soling team.