Alakult: 1981, Anglia, - Yes, King Crimson, Emerson Lake and Palmer, és The Buggles tagokból.

A csapatban megfordult zenészek:
* Geoff Downes - keyboards and background vocals (former member of Yes and The Buggles) - founding member
* John Wetton - bass and lead vocals (former member of King Crimson, UK, Uriah Heep and Family) - founding member
* Steve Howe - guitar and background vocals (also a member of Yes) - founding member
* Carl Palmer - drums (former member of Emerson, Lake and Palmer) - founding member
* Greg Lake - bass and lead vocals (former member of King Crimson and Emerson, Lake and Palmer). Although Lake's work with Asia has never been released in album form, one live track "Heat of the Moment", was released on Lake's From the Underground... the Official Bootleg album (1998).
* Mandy Meyer - guitar and background vocals
* Pat Thrall - guitar and background vocals
* Al Pitrelli - guitar (former member of Savatage and Megadeth and current member of Trans-Siberian Orchestra)
* Michael Sturgis - drums
* John Payne - bass, lead vocals, producer
* Aziz Ibrahim - guitar
* Tomoyasu Hotei - guitar
* Holger Larisch - guitar
* Elliot Randall - guitar
* Luis Jardim - percussion
* Chris Slade - drums (former member of AC/DC, Uriah Heep, and The Firm)
* Jay Schellen - drums (former member of Hurricane and World Trade, current member of Conspiracy)