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Gunsmoke (1955-1975)

Photo by CBS Photo Archive/Getty Images

Gunsmoke tops the list as the longest-running dramatic series in network television history with 635 episodes. Set in Dodge City, Kansas, during the 1870s, Gunsmoke began as a radio program in 1952, switched to the land of visual entertainment in 1955, and finally ended its 20-year run in 1975.

 

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    Start the Countdown
  • 1: Gunsmoke (1955-1975)
  • 2: Lassie (1954-1972)
  • 3: Death Valley Days (1952-1970)
  • 4: The Adventures of Ozzie and Harriet (1952-1966)
  • 5: Bonanza (1959-1973)
  • 6: The Simpsons (1989-????)
  • 7: Law & Order (1990-2010)
  • 8: My Three Sons (1960-1972)
  • 9: Dallas (1978-1991)
  • 10: Knots Landing (1979-1993)
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