Radio K.A.O.S. is the second solo studio album by English rock musician Roger Waters. Released on 15 June 1987 in the United Kingdom and June 16 in the United States, it was Waters' first solo studio album after his formal departure from the band Pink Floyd in 1985. Like his previous and future studio albums and many works of his during his time with Pink Floyd, the album is a concept album based on a number of key topical subjects of the late 1980s, including monetarism and its effect on citizens, popular culture of the time, and the events and consequences of the Cold War. It also makes criticisms of Margaret Thatcher's government, much like Pink Floyd's The Final Cut (1983), another album conceived by Waters.

George Roger Waters is an English musician and singer-songwriter. In 1965, he co-founded the rock band Pink Floyd as the bassist. Following the departure of the songwriter, Syd Barrett, in 1968, Waters became Pink Floyd's lyricist, co-lead vocalist and conceptual leader until his departure in 1985.