Éric Marcel Guy Tabarly (24 July 1931 – 13 June 1998) was a French Navy officer and yachtsman. He developed a passion for offshore racing very early on and won several ocean races such as the Ostar in 1964 and 1976, ending English domination in this specialty. Several of his wins broke long standing records. He owed his successes to his exceptional mastery of sailing and of each one of his boats, to both physical and mental stamina and, in some cases, to technological improvements built into his boats. Through his victories, Tabarly inspired an entire generation of ocean racers and contributed to the development of nautical activities in France.

Although very attached to the boat given to him early on by his parents — the Pen Duick — he played a pioneering role in successive innovations in naval architecture, including the development of the multihull via the design of his trimaran, Pen Duick IV (1968). His was one of the first offshore racing multihulls and confirmed the supremacy of this type of boat relative to monohulls. Many of the boats that embodied his innovations carried the name of Pen Duick.