Leave It to Beaver is an American television situation comedy that follows the misadventures of a suburban boy, his family and his friends. It stars Barbara Billingsley, Hugh Beaumont, Tony Dow and Jerry Mathers ("as The Beaver", as the opening credits put it).

CBS first broadcast the show on October 4, 1957, but dropped it after one season. ABC picked it up and aired it for another five years, from October 2, 1958, to June 20, 1963. It proved to be a scheduling challenge for both networks, moving through four time slots (Wednesday through Saturday evenings) over the course of its run. The series was produced by Gomalco Productions from 1957 to 1961, and then by Kayro Productions from 1961 to 1963. It was distributed by Revue Studios.

Leave It to Beaver never broke into the Nielsen Ratings top 30 in its six-season run. However, it proved to be much more popular in reruns. It also led to an unsuccessful 1997 film of the same name.