Henri Jean Cochet (; 14 December 1901 – 1 April 1987) was a French tennis player. He was a world No. 1 ranked player, and a member of the famous "Four Musketeers" from France who dominated tennis in the late 1920s and early 1930s.
Born in Villeurbanne, Rhône, Cochet won a total 22 majors including seven Grand Slam singles, five doubles and three mixed doubles. In addition he won three singles, two doubles and one mixed doubles ILTF majors. He also won one professional major in singles. During his major career, he won singles and doubles titles on three different surfaces: clay, grass and wood. He was ranked as world No. 1 player for four consecutive years, 1928 pairing with Frank Hunter for the latter. and world second in doubles with Jean Borotra. Pierre Gillou (L'Auto), Bill Tilden, F. Gordon Lowe (The Scotsman), W. J. Daish
French dominance (1929)
The 1929 season did not begin as flawless as the previous one; on 20 January Jean Borotra beat Cochet in their first ever Belgian Covered Courts tournament final, which took five sets to decide. F. Gordon Lowe, L'Auto and Vincent Richards Evidently he led the French rankings as well. Pierre Gillou, and Didier Poulain (L'Auto) but came second in the list of Bill Tilden behind Borotra. Pierre Gillou, Didier Poulain, Stanley Doust, Bill Tilden, Noel Dickson (Melbourne Herald), "Service" (Western Mail) and Sport magazine (Zurich).
Rivalry with Vines and turning professional (1932–33)
thumb|right|Vines (left), who pushed Cochet (right) off the world number one rank in 1932 (Pictured: Davis Cup, same year)
During 1932 Cochet restricted his schedule to appearances at Monaco Cups, the French Championships, Wimbledon, U.S. National Championships and the Davis Cup and a minor tournament in Paris. Plaa and Cochet returned in February to the Madison Square Garden where Vines and Tilden were already practising and waiting for them. In late May Philadelphia hosted the Middle States tournament at its Germantown Cricket Club; Cochet advanced to the semi-final where Tilden's superiority proved to be his undoing. At the Milton Courts in Brisbane his invited opponent was the recently turned professional Jack Cummings whom he battled twice, finishing one-all.