I've Got a Secret was a 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, the panel tries to determine a contestant's "secret": something that is unusual, amazing, embarrassing or humorous about that person/people.

The original version of I've Got a Secret premiered on June 19, 1952, on CBS and ran until April 3, 1967. This version began broadcasting in black and white, switching to a color format in 1966, the season in which all commercial prime time network programs were produced in color.

The show was revived for the 1972–73 season in once-a-week syndication and again from June 15 to July 6, 1976, as a summer replacement series on CBS. Oxygen launched a daily revival series in 2000, which ran until 2001.