Cara Williams was an American film and television actress. She was best known for her role as Billy's Mother in The Defiant Ones (1958), for which she was nominated for the Academy Award for Best Supporting Actress, and for her role as Gladys Porter on the 1960–62 CBS television series Pete and Gladys, for which she was nominated for the Emmy Award for Best Lead Actress in a Comedy. At the time of her death, Williams was one of the last surviving actors from the Golden Age of Hollywood.

The Defiant Ones is a 1958 American drama film which tells the story of two escaped prisoners, one white and one black, who are shackled together and who must co-operate in order to survive. It stars Tony Curtis and Sidney Poitier.