John Kenneth Wetton (born 12 June 1949) is an English singer, bassist, and songwriter. He was born in Willington, Derbyshire, and grew up in Bournemouth. He initially rose to fame in with bands such as Mogul Thrash, Family, King Crimson, Roxy Music/Bryan Ferry, Uriah Heep, and Wishbone Ash.

After his period with King Crimson, Wetton formed UK, and later he was the frontman and principal songwriter of the supergroup Asia. which has proved his biggest commercial success. Their self-titled debut album sold 8 million copies worldwide and was Billboard magazine's No. 1 album of 1982. He later formed the duo Icon with Geoff Downes (ex-Yes, ex-Buggles) and since the 1990s has had a successful solo career releasing a large number of studio and live albums.