East 17 are an English pop boy band started by Tony Mortimer, Brian Harvey, John Hendy, and Terry Coldwell in 1991. As of 2020, the group consists of Coldwell, Robbie Craig and Joe Livermore. East 17 have undergone multiple lineup changes, with Coldwell remaining the only constant member.

A boy band is loosely defined as a vocal group consisting of young male singers, usually in their teenage years or in their twenties at the time of formation. Generally, boy bands perform love songs marketed towards girls and young women. Many boy bands dance as well as sing, usually giving highly choreographed performances. South Korean boy bands usually also have designated rappers.