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Top 5 longest-running scripted prime-time US TV series

evergreen

Seasons in production

Snapshot · 2026-08-09

  1. 1

    The Simpsons

    35+ seasons

  2. 2

    Law & Order: SVU

    25+ seasons

  3. 3

    Gunsmoke

    20 seasons

  4. 4

    Law & Order

    23 seasons

  5. 5

    Lassie

    19 seasons