Supporting characters
Ken Osmond as Eddie Haskell
Eddie Haskell's parents played by:
Karl Swenson in two 1958 episodes, "Train Trip" and "Voodoo Magic".
Ann Doran in the 1958 episode "Voodoo Magic".
John Alvin in the 1961 episode "Eddie Spends the Night".
Anne Barton in two 1963 episodes, "Summer in Alaska" and "The Credit Card".
George O. Petrie in two 1963 episodes, "Summer in Alaska" and "The Credit Card".
Diane Brewster as Miss Canfield (October 4, 1957 – March 21, 1958 air dates), Beaver's first teacher at Grant Avenue Grammar School. Brewster also played Miss Simms in the pilot episode.
Sue Randall as Miss Alice Landers (October 16, 1958 – June 20, 1963), Beaver's teacher, replacing Miss Canfield
Doris Packer as Mrs. Rayburn, the principal of Grant Avenue Grammar School
Stephen Talbot as Gilbert Bates (March 19, 1959 – June 6, 1963): Appears first as an insecure braggart, becomes a character who constantly gets Beaver in trouble, and ends up as Beaver's best friend.
Rusty Stevens as Larry Mondello (November 22, 1957 – 1960)
Majel Barrett as Gwen Rutherford
Madge Blake as Margaret Mondello, Larry's mother
Richard Correll as Richard Rickover (April 30, 1960 – October 18, 1962)
Stanley Fafara as Hubert "Whitey" Whitney (October 4, 1957 – June 6, 1963)
Jeri Weil as Judy Hensler (October 4, 1957 – October 15, 1960)
Karen Sue Trent as Penny Woods (1960 - 1962)
Burt Mustin as Gus the fireman, head of Auxiliary Firehouse No. 7 (October 4, 1957 – February 24, 1962)
Frank Bank as Clarence "Lumpy" Rutherford
Richard Deacon as Fred Rutherford, Lumpy's pompous, demanding father and Ward Cleaver's equally pompous, smug co-worker
Buddy Hart as Chester Anderson
Tiger Fafara (Stanley Fafara's brother) as Tooey Brown, Wally's friend
Pamela Baird as Mary Ellen Rogers (April 16, 1958 – June 20, 1963), Wally's first girlfriend
Cheryl Holdridge as Julie Foster (January 7, 1961 – April 11, 1963), another of Wally's girlfriends
