Denton True "Cy" Young (March 29, 1867 – November 4, 1955) was an American baseball player who pitched for five different major league teams from 1890 to 1911.

During his 22-year career, Young recorded numerous professional pitching records in the majors, some of which have stood for a century. Young retired with 511 career wins, 94 wins ahead of Walter Johnson, who is second on the list of most wins in Major League history. In honor of Young's contributions to Major League Baseball, the Cy Young Award, an annual award given to the pitcher voted the most effective in each of the two leagues, was created in 1956. Young was also elected to The Baseball Hall of Fame in 1937.

In addition to wins, Young currently holds the Major Leagues records for most career innings pitched (7,355), most career games started (815), and most complete games (749). He also retired with 316 losses, the most in MLB history. Over the span of his career, Young had 76 career shutouts, which is the fourth most in history. He also won at least 30 games in a season five times, with ten other seasons of 20+ wins.[8] In addition, Young pitched three no-hitters, including the first perfect game of baseball's "modern era". In 1999, 88 years after his final Major League appearance and 44 years after his death, editors at The Sporting News ranked Cy Young 14th on their list of "Baseball's 100 Greatest Players". That same year, baseball fans named Young to the Major League Baseball All-Century Team.

Young's career started in 1890 with the Cleveland Spiders. After eight years with the Spiders, Young was moved to St. Louis in 1899. After two years there, Young jumped to the newly-created American League, joining the Boston franchise. He was traded back to the city of Cleveland in 1909, before spending the final two months of his career in Boston. After his retirement, Young went back to his farm in Ohio, where he stayed until his death at age 88 in 1955.