"Christmas Will Break Your Heart" is a song by American rock band LCD Soundsystem. It was released as a digital download as well as a limited one-sided 7-inch vinyl on December 24, 2015, making it the band's first single in five years.

Prior to the song's release, in October 2015, there were rumors regarding a possible LCD Soundsystem reunion. It was stated in a Consequence of Sound article that "multiple sources" confirmed that the band would be reuniting in 2016 and that they would be headlining high-profile music festivals. Although this was also confirmed by Billboard, DFA Records label manager Kris Petersen and co-founder Jonathan Galkin both confirmed that LCD Soundsystem would not be reuniting.

Band frontman James Murphy called "Christmas Will Break Your Heart" a "depressing Christmas song" which he had been singing to himself for years prior to its recording. The song was recorded at DFA Studios in New York City during 2015 after Murphy had gotten past band members Al Doyle, Pat Mahoney, Nancy Whang, and Tyler Pope to come to the studio to record the track. The song was also mastered by American musician Bob Weston. Following the release of the song, it was confirmed in January 2016 by the band that they would be setting off on a reunion tour and would be releasing a new studio album some time in 2016.

"Christmas Will Break Your Heart" was released on December 24, 2015 (Christmas Eve) as a 7-inch vinyl and digital download. The 7-inch vinyl is one-sided and limited to only 1,000 copies. The song also marked the first single to be released by the band in four years, following the single "Live Alone", which was released in April 2011.

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