Brian Keith (November 14, 1921 – June 24, 1997) was an American film, television, and stage actor who in his four decade-long career gained recognition for his work in movies such as the 1961 Disney family film The Parent Trap, the 1966 comedy The Russians Are Coming, the Russians Are Coming, and the 1975 adventure saga The Wind and the Lion, in which he portrayed Theodore Roosevelt.

On television, two of his best known roles were that of a widowed uncle turned bachelor: Bill Davis, in the 1960s sitcom Family Affair, and a tough judge in the 1980s drama Hardcastle and McCormick.