"Say Hello, Wave Goodbye" is a song from the album Non-Stop Erotic Cabaret by English synthpop duo Soft Cell that was released as a single in January 1982 and reached number three on the UK Singles Chart.

In 1991, the song was remixed by Julian Mendelsohn and released as Say Hello, Wave Goodbye '91 to promote the compilation album Memorabilia - The Singles, it reached number 38 on the UK Singles Chart. Marc Almond re-recorded his vocals for the new version.

The song was covered by the Canadian rock band Windwalker on their debut album Rainstick, released in 1991.

The song was covered by English artist David Gray and released on his highly successful 1998 album White Ladder. It was the album's fifth proper and final single and reached #26 on the UK Singles Chart. Gray's version runs at 8:58 in length, which is just under four minutes longer than the original; as such, the single featured a shorter radio edit. In addition, Gray's version omits the comma out of the title.

The song was covered by the French band Nouvelle Vague on their 2009 covers album 3.

The song was covered by English pop band The Hoosiers as a bonus track on the iTunes version of their 2010 album The Illusion of Safety. It was also included on their 2011 re-release album called Bumpy Ride.

Norwegian band a-ha covered the song during a 2010 BBC Radio 2 concert on their farewell tour.

It was used in Doctors, episode 92/219 - "The Mad Woman in the Attic", Series 16, first broadcast: 17 September 2014.

The song is played during the credits of the concert film Shut Up and Play the Hits, which chronicles the band LCD Soundsystem's last show and the day after with lead singer James Murphy.

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