Walter Carl Becker was an American musician, songwriter, and record producer. He was the co-founder, guitarist, bassist, and co-songwriter of the jazz rock band Steely Dan.

Steely Dan is an American rock band founded in 1971 in New York by Walter Becker and Donald Fagen. Originally having a full band lineup, by the end of 1974 Becker and Fagen chose to stop playing live and continue Steely Dan as a studio-only duo, utilising a revolving cast of session musicians. Rolling Stone has called them "the perfect musical antiheroes for the seventies".