"Up" is a song by English singer Olly Murs, released on 1 December 2014 as the second single from his fourth studio album, Never Been Better (2014). It features American singer Demi Lovato and is also featured on the deluxe version of Lovato's fourth album, Demi. It was written and produced by Daniel Davidsen, Peter Wallevik and Cutfather, with additional writing from Wayne Hector, and Maegan Cottone.

"Up" has peaked at number four on the UK Singles Chart. It has also been certified Platinum in the UK for sales of over 600,000. Murs performed this song at his 2015 Never Been Better Tour with support act Ella Eyre singing Lovato's lyrics.

The song was written and produced by Daniel Davidsen, Cutfather, and Peter Wallevik, and it was co-written by Wayne Hector and Maegan Cottone. According to Cutfather, the song is inspired by the music of Mumford & Sons and Phillip Phillips. "Up" was initially submitted to English-Irish boy band One Direction, but it was rejected by their label Syco Music. The song's chorus was then re-written by Maegan Cotton and then submitted to Olly Murs as a duet.

The music video was directed by Ben and Gabe Turner and released on Vevo on 11 December 2014. The video features Murs and Lovato standing in two rooms separated by a wall. They begin to wreck the rooms before Murs uses a guitar to break a hole into the wall and he and Lovato begin to remove most of the bricks in the wall and look upon each other.

Murs and Lovato first performed the song live on the final of the eleventh series of The X Factor on 14 December 2014.

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