Diane J. McBain (May 18, 1941 – December 21, 2022) was an American actress who, as a Warner Brothers contract player, reached a brief peak of popularity during the early 1960s. She was best known for playing an adventurous socialite in the 1960–1962 television series Surfside 6 and as one of Elvis Presley's leading ladies in 1966's Spinout.

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