"The Penguin Declines" is the 73rd episode of Batman, the conclusion of a three-part story in its second season on ABC. Its original telecast occurred on January 18, 1967, with a rerun on June 21. It guest-starred Cesar Romero as Joker and Burgess Meredith as Penguin.

Terry Moore is an American film and television actress who began her career as a child actor. She was nominated for the Academy Award for Best Supporting Actress for her performance in Come Back, Little Sheba (1952).