Marion Anthony Trabert (August 16, 1930 – February 3, 2021) was an American amateur World No. 1 tennis player and commentator. He was born in Cincinnati, Ohio. He won the French Open in 1954 and 1955, the Australian Open in 1955 the Wimbledon Championships in 1955, and the US Open in 1953, 1954 and 1955.