Split Second is an American game show that was created by Monty Hall and Stefan Hatos and produced by their production company, Stefan Hatos-Monty Hall Productions.There were two editions of Split Second produced by Hatos and Hall. The first was a daytime series produced for ABC that premiered on March 20, 1972, and ran until June 27, 1975, and was recorded at ABC Television Center in Hollywood. Tom Kennedy was the host for the original ABC version, with Jack Clark serving as announcer.The second version was produced for syndication in Hamilton, Ontario, Canada, at CHCH-TV's studios; this series premiered December 15, 1986, and was a co-production of Hatos-Hall and distributors Concept Equity Funding Limited and Viacom Enterprises. Canadian television stations CHCH-TV, CFAC-TV, and CITV-TV assisted in the production of the syndicated series as well, but were not credited on American airings. The revival series featured Monty Hall as host with Sandy Hoyt as announcer and aired until the end of the 1986–87 season with reruns airing until September 11, 1987.

In February 2023, it was announced that the show would be revived by Game Show Network, with John Michael Higgins as host, and premiered on April 17, 2023.