John Ritter as Jack Tripper
         (1977-1984)
Joyce DeWitt as Janet Wood
         (1977-1984)
Suzanne Somers as Christmas "Chrissy" Snow
          (1977-1981)
Norman Fell as Stanley Roper
Audra Lindley as Helen Roper
          (1977-1979)
Ann Wedgeworth as Lana Shields
                   (1979)
Here is the cast of Three's Company, along with the years they appeared on the show.
Don Knotts as Ralph Furley
          (1979-1984)
Richard Kline as Larry Dallas
            (1977-1984)
Jenilee Harrison as Cindy Snow
              (1980-1982)
Priscilla Barnes as Terri Alden
             (1981-1984)
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