Donna Douglas (born Doris Ione Smith; September 26, 1932 – January 1, 2015) was an American actress. She was best known for her role as Elly May Clampett in the CBS television series "The Beverly Hillbillies" from 1962 to 1971. She also appeared in the series "The Twilight Zone" and the movie "Frankie and Johnny" (1966), alongside Elvis Presley.