Robert Alba Keith, known professionally as Brian Keith, was an American film, television, and stage actor who in his six-decade career gained recognition for his work in films such as the Disney family film The Parent Trap (1961); Johnny Shiloh (1963); the comedy The Russians Are Coming, the Russians Are Coming (1966); and the adventure saga The Wind and the Lion (1975), in which he portrayed President Theodore Roosevelt.

The Parent Trap is a 1961 American romantic comedy film written and directed by David Swift. It stars Hayley Mills as a pair of teenage twins plotting to reunite their divorced parents by switching places with each other. Maureen O'Hara and Brian Keith play the parents. Although the plot is very close to that of the 1945 film Twice Blessed, The Parent Trap is based on the 1949 German children's novel Das doppelte Lottchen by Erich Kästner.