"409" is a song written by Brian Wilson, Mike Love, and Gary Usher for the American rock and roll band the Beach Boys. The song features Love singing lead vocals. It was originally released as the B-side of the single "Surfin' Safari" (1962). It was later released on their 1962 album Surfin' Safari, and appeared again on their 1963 album Little Deuce Coupe. The song is credited for initiating the hot rod music craze of the 1960s.