I've Got a Secret is an American panel game show produced by Mark Goodson and Bill Todman for CBS television. Created by comedy writers Allan Sherman and Howard Merrill, it was a derivative of Goodson–Todman's own panel show, What's My Line?. Instead of celebrity panelists trying to determine a contestant's occupation, however, as in What's My Line, the panel tried to determine a contestant's secret: something that is unusual, amazing, embarrassing, or humorous about that person.

A panel show or panel game is a radio or television game show in which a panel of celebrities participate. Celebrity panelists may compete with each other, such as on The News Quiz; facilitate play by non-celebrity contestants, such as on Match Game and Blankety Blank; or do both, such as on Wait Wait Don't Tell Me. The genre can be traced to 1938, when Information Please debuted on U.S. radio. The earliest known television panel show is Play the Game, a charades show in 1946. The modern trend of comedy panel shows can find early roots with Stop Me If You've Heard This One in 1939 and Can You Top This? in 1940. While panel shows were more popular in the past in the U.S., they are still very common in the United Kingdom.