"Shine On You Crazy Diamond" is a nine-part Pink Floyd composition written by David Gilmour, Roger Waters, and Richard Wright, which was first performed on Pink Floyd's 1974 French tour and appeared in Pink Floyd's 1975 concept album Wish You Were Here. The song is written about and dedicated to founder member Syd Barrett, who departed from the band in 1968 after dealing with mental problems and substance abuse.

Richard William Wright was an English keyboardist and songwriter who co-founded the progressive rock band Pink Floyd. He appeared on almost every Pink Floyd album and performed on all their tours. He was inducted into the Rock and Roll Hall of Fame in 1996 as a member of Pink Floyd.