Keith Richards (born 18 December 1943), often referred to during the 1960s and 1970s as "Keith Richard", is an English musician and songwriter who has achieved international fame as the co-founder, guitarist, secondary vocalist, and co-principal songwriter of the Rolling Stones. His songwriting partnership with Mick Jagger is one of the most successful in history. His career spans over six decades, and his guitar playing style has been a trademark of the Rolling Stones throughout the band's career. Richards gained press notoriety for his romantic involvements and illicit drug use, and he was often portrayed as a countercultural figure.

Richards was born in and grew up in Dartford, Kent. He studied at the Dartford Technical School and Sidcup Art College. After graduating, Richards befriended Jagger, Bill Wyman, Charlie Watts, and Brian Jones and joined the Rolling Stones. As a member of the Rolling Stones, Richards also sings lead on some Stones songs. Richards typically sings lead on at least one song a concert, including "Happy", "Before They Make Me Run", and "Connection". Outside of his career with the Rolling Stones, Richards has also played with his own side-project, The X-Pensive Winos. He also appeared in three Pirates of the Caribbean films as Captain Teague, father of Jack Sparrow, whose look and characterisation was inspired by Richards himself.

In 1989, Richards was inducted into the Rock and Roll Hall of Fame and in 2004 into the UK Music Hall of Fame with the Rolling Stones. Rolling Stone magazine ranked him fourth on its list of 100 best guitarists in 2011. The magazine lists fourteen songs that Richards wrote with the Rolling Stones' lead vocalist Jagger on its "500 Greatest Songs of All Time" list.