"Echoes" is a song by English rock band Pink Floyd, and the sixth and final track from their 1971 album Meddle. It was written in 1970 by all four members of the group. Containing several extended instrumental passages, largely ambient sound effects, and musical improvisation, the track has a running time of 23:31 and comprises the entire second side of the vinyl and cassette recordings.
It also appears in shortened form as the fifth track on the compilation album which took its name, Echoes: The Best of Pink Floyd. The composition was originally assembled from separate fragments. It was later split in two parts to serve as both the opening and closing numbers in the band's film Live at Pompeii. The song was used to open the band's 1987 A Momentary Lapse of Reason Tour after not having been played for more than a decade, but was retired again after eleven shows. It was revived for Gilmour's 2006 On an Island Tour, where it was performed at every show. Live versions were released on Gilmour's albums Live in Gdańsk and Remember That Night.