Asia are an English rock band formed in London in 1981. The most commercially successful line-up was its original, which was a supergroup of four members of different progressive rock bands of the 1970s: lead vocalist and bassist John Wetton of King Crimson and U.K., guitarist Steve Howe of Yes, keyboardist Geoff Downes of Yes and the Buggles, and drummer Carl Palmer of Emerson, Lake & Palmer. Their debut album, Asia, released in 1982, remains their best selling album and went to number one in several countries. The lead single from the album, "Heat of the Moment", remains their top charting and best-known song, reaching the top 40 in over a dozen markets and peaking in the U.S. at #4 on the Billboard Hot 100 and #1 on the Billboard Mainstream Rock chart.

The band underwent multiple line-up changes before the original four members reunited in 2006. As a result, a band called Asia Featuring John Payne exists as a continuation of John Payne's career as Asia's frontman from 1991 until Wetton's return in 2006. In 2013, the original line-up was broken once again when Howe retired from the band and was replaced by guitarist Sam Coulson. After a few years of inactivity, Billy Sherwood (of Yes, World Trade and Circa:) replaced an ailing Wetton (who passed on shortly thereafter) in Asia for a summer 2017 tour with Journey. Following the end of the tour, the band went on hiatus again, re-emerging in 2019 with Ron "Bumblefoot" Thal replacing both Sherwood on vocals and Coulson on guitar.