Top Cast
Keir Dullea
Dr. David Bowman
Gary Lockwood
Dr. Frank Poole
William Sylvester
Dr. Heywood Floyd
Douglas Rain
HAL 9000 (voice)
Daniel Richter
Moonwatcher
Leonard Rossiter
Dr. Andrei Smyslov
Margaret Tyzack
Elena
Robert Beatty
Dr. Ralph Halvorsen
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Sean Sullivan
Dr. Roy Michaels
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Frank W. Miller
Mission Controller (voice)
