"One Love" is a song by English boy band Blue. Co-written by the band and StarGate, who also produced the track, it was released in the United Kingdom on 21 October 2002 as the lead single from their second studio album, One Love (2002). It reached number three on the UK Singles Chart and entered the top 10 in Denmark, Ireland, Italy, and New Zealand. "One Love" has received a gold certification from the British Phonographic Industry (BPI), representing sales and streams of at least 400,000 units in the UK. The song's music video was directed by Cameron Casey.

Blue are a British boy band consisting of members Simon Webbe, Duncan James, Antony Costa, and Lee Ryan. The group formed in 2000 and released three studio albums before announcing a hiatus in late 2004. In January 2011, the group reformed and represented the United Kingdom at the 2011 Eurovision Song Contest in Düsseldorf with the song "I Can", coming in 11th place with 100 points. In 2013, it was confirmed that the group would be joining The Big Reunion, in which six groups from the past reform for a one-off gig. On 27 March 2013, the group announced they would embark on their first headlining tour later on in the year, their first tour in nearly ten years.