As of July 2026, Karl Swenson is best known for Little House on the Prairie and Lassie. Find every show and movie Karl Swenson has starred in — and where to watch them — below.
Karl Swenson

Karl Swenson

Actor Born 1908 Brooklyn, New York City, New York, USA 10 TV Shows 8 Movies

Karl Swenson (July 23, 1908 – October 8, 1978) was an American theatre, radio, film, and television actor. Swenson is remembered for his role as the doomsayer in the diner in Alfred Hitchcock's The Birds (1963) and as the voice of Merlin in Disney's The Sword in the Stone (1963). On television, he had numerous credits in guest roles on various shows, especially Westerns, including episodes of Bonanza, The Virginian, and Gunsmoke. He had a major recurring role as Walnut Grove founder Lars Hanson on Little House on the Prairie (1974 - 1978).

Swenson also had roles in The Prize (1963), Major Dundee (1965), The Sons of Katie Elder (1965), The Cincinnati Kid (1965), Seconds (1966), Hour of the Gun (1967), ...tick...tick...tick... (1970), The Wild Country (1970), Vanishing Point (1971) and Ulzana's Raid (1972).

Born in Brooklyn, New York of Swedish parentage, he originally planned to be a doctor and studied at Marietta College before pursuing acting. Swenson appeared extensively on the radio from the 1930s through the 1950s. He entered the film industry in 1943 with two wartime documentary shorts, December 7 and The Sikorsky Helicopter. Swenson was married to actress Joan Tompkins. He died of a heart attack at Charlotte Hungerford Hospital in Torrington, Connecticut on October 8, 1978, shortly after filming the Little House on the Prairie episode in which his character dies. The episode aired on October 16, 1978, eight days after Swenson's death. He was interred at Center Cemetery in New Milford, Connecticut.

Karl Swenson has built a filmography of 18 credits over a career spanning from 1954 to 1974.

Karl Swenson's most notable role to date came in The Birds (1963), where he played Le prophète de malheur ivre au bar. He also appeared in The Sword in the Stone (1963) as Merlin (voice). Most recently appeared in Little House on the Prairie (1974) as Lars Hanson.

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📺 Karl Swenson's TV Shows

Little House on the Prairie
Lars Hanson
1974
Lassie
1954
The Rifleman
Chris Manse
1958
Hawaii Five-O
Abel Morgan
1968
Have Gun, Will Travel
1957
Dr. Kildare
Judge
1961
Leave It to Beaver
George Haskell
1957
77 Sunset Strip
1958
The Mod Squad
1968
Cimarron Strip
1967

🎬 Karl Swenson's Movies

The Sword in the Stone
Merlin (voice)
1963
The Birds
Le prophète de malheur ivre au bar
1963
… tick… tick… tick…
Frank Braddock Sr.
1970
Judgment at Nuremberg
Heinrich Geuter
1961
Seconds
Dr. Morris
1966
Vanishing Point
Clerk
1971
Ulzana's Raid
Rukeyser
1972
The Gallant Hours
Bill Bailey
1960

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