Edward Clark Haskell is a fictional character on the American television sitcom Leave It to Beaver, which ran on CBS from October 4, 1957, to 1958 and on ABC from 1958 to 1963. He was played by Ken Osmond. The character was also featured in the later series Still the Beaver, and in the 1997 film remake of the original series.

Leave It to Beaver is an American television sitcom that follows the misadventures of a suburban boy, his family and his friends. It stars Barbara Billingsley, Hugh Beaumont, Tony Dow and Jerry Mathers.