Gambit is an American television game show based on the card game blackjack, created by Wayne Cruseturner and produced by Heatter-Quigley Productions. The show originally ran on CBS from September 4, 1972 to December 10, 1976. A slightly retooled version, Las Vegas Gambit, aired on NBC from October 27, 1980 to November 27, 1981, originating from the Tropicana Hotel and Casino in Las Vegas. The 1972–1976 version changed taping locations at CBS Television City, taping episodes in Studios 31, 33, 41 and 43 at various times.

Both versions were hosted by Wink Martindale and announced by Kenny Williams. Elaine Stewart was the card dealer for the CBS version, while Beverly Malden filled this role for the first half of Las Vegas Gambit, and was later replaced by Lee Menning.

The program was retooled as Catch 21, which began airing on GSN in 2008.