"One Kiss" is a song recorded by British record producer Calvin Harris and British singer Dua Lipa. Written by Lipa, Jessie Reyez and its producer Harris, it was released by Columbia Records on 6 April 2018, as the second single from Harris' upcoming sixth studio album. On 20 April 2018, "One Kiss" peaked at the top of the UK Singles Chart, a week after entering at number three on the chart.

On 21 March, 2018, Harris changed his Twitter header image to one that features a QR code in the centre. When scanned, it reads "Calvin Harris & Dua Lipa - One Kiss". He also wrote on Instagram that there would be "a new single in about 2 weeks". On 2 April, both artists announced the song with identical social media posts, revealing the blue cover art and release date. A lyric video was released alongside the single, featuring VHS-quality footage of two couples being played on a vintage television in an outdoor setting.

"One Kiss" is an uptempo deep house and dance-pop song that contains elements of '90s house music. It features "a lengthy instrumental intro", after which Lipa coos on the "mellow synths" and later moves on to a "club-conquering, mostly instrumental" chorus.

The song is performed in the key of F major with a tempo of 124 beats per minute in common time. It follows a chord progression of Am–B♭maj7–Fmaj7–Gm9, and Lipa's vocals span an octave, from G₃ to G₄.

Hugh McIntyre of Forbes pointed out that the song "plays like an homage to '90s house music", writing that the uncredited vocals on the chorus "steals the show from the verses which feature Lipa's now-recognizable vocals". He concluded by deeming the song "a natural progression from Harris' last single". Mike Wass of Idolator regarded it as "his most accessible and instantly catchy track since 'This Is What You Came For' in 2016", writing that it is "guaranteed to be massive". Lauren O'Neill of Noisey opined that the song "conjure up its summery vibe" despite its inability to "reach the quietly euphoric heights of a number of the moments from Funk Wav Bounces Vol. 1". Ross McNeilage of MTV News wrote that the song marks a "return to more familiar territory", calling it "a pulsating house track that is undoubtedly going to become the soundtrack to our summer" and "the year's first bona fide sunshine banger". He also found it "a lot more uplifting" than Lipa's previous dance collaboration with Martin Garrix, "Scared to Be Lonely".

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