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Michael Te-Pei Chang (born February 22, 1972) is a former American professional tennis player. He is best remembered for becoming the youngest-ever male player to win a Grand Slam singles title when he won the French Open in 1989 at the age of 17.

Known for his on-court speed and fighting spirit, Chang is considered by many observers to have been one of the best tennis counterpunchers of all time. He also introduced the jumping two-handed backhand. He remained in the top 10 of the ATP world rankings for several years in the 1990s, peaking at world no. 2.

Chang was inducted into the International Tennis Hall of Fame in 2008.

Chang first came to the tennis world's attention as an outstanding junior player who set numerous "youngest-ever" records. He won his first national title, the USTA Junior Hard Court singles, at the age of 12. Aged 13, he won the Fiesta Bowl 16s. Two years later, aged 15, Chang won the USTA Boys 18s Hardcourts and the Boys 18s Nationals, and became the youngest player to win a main draw match at the US Open when he defeated Paul McNamee in four sets in the first round. A month later he reached the semifinals at Scottsdale, Arizona to become the youngest player to reach the semifinal stage of a top-level professional tournament. He won his first top-level singles title in 1988 at San Francisco, aged 16 years and 7 months.