Radio comedy, or comedic radio programming, is a radio broadcast that may involve variety show, sitcom elements, sketches, and various types of comedy found in other media. It may also include more surreal or fantastic elements, as these can be conveyed on a small budget with just a few sound effects or some simple dialogue. Radio comedy began in the United States in 1930, based on the fact that as most United Kingdom music hall comedians such as Charlie Chaplin and Stan Laurel progressed to silent films, they moved to Hollywood and fed the radio comedy field. Another British music hall comic, George Formby, stayed in the British movie industry, and in 1940 joined the Entertainments National Service Association to entertain British World War II troops. UK radio comedy therefore started later, in the 1950s.

The Firesign Theatre was an American surreal comedy troupe who first appeared on November 17, 1966, in a live performance on the Los Angeles radio program Radio Free Oz on station KPFK FM. They continued appearing on Radio Free Oz, which later moved to KRLA 1110 AM and then KMET FM, through February 1969. They produced fifteen record albums and a 45 rpm single under contract to Columbia Records from 1967 through 1976, and had three nationally syndicated radio programs: The Firesign Theatre Radio Hour Hour [sic] in 1970 on KPPC-FM; and Dear Friends (1970–1971) and Let's Eat! (1971–1972) on KPFK. They also appeared in front of live audiences, and continued to write, perform, and record on other labels, occasionally taking sabbaticals during which they wrote or performed solo or in smaller groups.