"Mistletoe" is a Christmas song by Canadian singer Justin Bieber. The song was written by Bieber and his producers, Nasri Atweh and Adam Messinger. The song was released on October 17, 2011, as the lead single from his second studio album and first Christmas album, Under the Mistletoe (2011). "Mistletoe" is a pop and R&B song, that has reggae influences. "Mistletoe" received generally positive reviews from most music critics. The song reached the top ten in Canada, Denmark and Norway, and slightly missed the top 10 in the US, peaking at 11, while also reaching the top forty in nine other countries. It set the record for the highest debut for a Christmas song in Billboard Hot 100 history. The song's accompanying music video was directed by Roman White. It features the singer singing on a snowy, lit-up street.

Justin Drew Bieber is a Canadian singer. Regarded as a pop icon, he is recognized for his multi-genre musical performances. He was discovered by American record executive Scooter Braun in 2008 and subsequently brought to American singer Usher, both of whom formed the record label RBMG Records to sign Bieber in October of that year. He gained recognition following the release of his debut extended play (EP) My World (2009), which was quickly met with international commercial success and led to his establishment as a prominent teen idol.