"Baby" is a song by British electronic music group Clean Bandit featuring Welsh singer Marina and Puerto Rican singer Luis Fonsi, released as the sixth single from Clean Bandit's second album, What Is Love?, on 2 November 2018. "Baby" is Marina's first single where she is not credited as Marina and the Diamonds, a stage name she had used on prior releases. It is included on her fourth studio album, Love + Fear. A version without Fonsi appears on the album's vinyl release.