"One by One" is a song by American singer Cher. Written by Anthony Griffiths of English rock band The Real People, it had initially been recorded by Irish singer Johnny Logan for his 1989 album Mention My Name and released on a double A-sided single, which reached the top 20 of the Irish Singles Chart. Cher recorded a rock-tinged version of "One by One" several years later for her twenty-first studio album, It's a Man's World (1995). Production on her version was helmed by English producer Stephen Lipson. Cher is credited as a composer on the US edition of It's a Man's World.
The song served as the album's first American and second European single following her rendition of the Marc Cohn song "Walking in Memphis." First released on January 5, 1996, by Reprise Records and WEA, it received a warm chart reception, reaching the top 10 in Hungary, Scotland, the United Kingdom and on a composite European Hit Radio Top 40. In Canada and the United States, the Sam Ward-produced version, known for its mid-'90s contemporary R&B/pop feel, was issued as a single and enjoyed success on the adult contemporary charts in both nations.