Walter Matthau (October 1, 1920 – July 1, 2000) was an American actor and comedian.
Matthau is best known for his role as Oscar Madison in The Odd Couple and his frequent collaborations with Odd Couple co-star Jack Lemmon. He won the Academy Award for Best Supporting Actor for his performance in the 1966 Billy Wilder film The Fortune Cookie. Besides the Oscar, he was the winner of BAFTA, Golden Globe and Tony awards.