Charles Marcus Matthau is an American director, producer, actor, and writer. He is the son of actor Walter Matthau and actress/author Carol Grace. Matthau gained recognition for his directorial work encapsulating humanity and humor, and is known for his film adaptations of books. He transitioned from an audio commentator in the Paramount Centennial Collection edition of The Odd Couple to a director over the years.

Walter Matthau was an American actor, comedian and film director. He won the Academy Award for Best Supporting Actor for his performance in the Billy Wilder film The Fortune Cookie (1966).