Malcolm Mitchell Young (born 6 January 1953) is a Scottish-born Australian guitarist best known as founder, rhythm guitarist, backing vocalist and songwriter for the Australian hard rock band AC/DC. He remained with the band since its November 1973 inception, barring a brief absence in 1988, until 2014. In 2003, Young and the other members of AC/DC were inducted into the Rock and Roll Hall of Fame.

Though his younger brother Angus (born 31 March 1955) is the more visible of the brothers, Malcolm Young has been described as the businessman behind AC/DC. As the rhythm guitarist, he is responsible for the broad sweep of the band's sound, developing many of the band's guitar riffs and co-writing the band's material with Angus. He is married to Linda Young and has two children, Cara and Ross.