Whose Line Is It Anyway? (sometimes shortened to Whose Line? or abbreviated as WLIIA?) is a short-form improvisational comedy TV show. Originally a British radio programme, it later moved to television as a series made for Britain's Channel 4 before being produced in the United States as well. The title is a pun on the stage play Whose Life Is It Anyway? and the series What's My Line?.
The show consists of a panel of four performers and comedians who create characters, scenes and songs on the spot, in the style of short-form improvisation games. Topics for the games are based on either audience suggestions or predetermined prompts from the host. Both the British and the American shows ostensibly take the form of a game show but the host arbitrarily assigns points and randomly chooses a winner at the end of each episode.