Douglas Rain is a Canadian actor and narrator born in 1928 in Winnipeg, Manitoba. He is primarily a stage actor but in film, his most famous role was as the voice for HAL 9000 in 2001: A Space Odyssey.

Douglas Rain studied acting at the Banff School of Fine Arts in Banff, Alberta as well as in London at the Old Vic School . He is best known for his association with the Stratford Festival of Canada that spans more than four decades. He has performed in many diverse roles on stage, most notably recognized for his performance at Stratford in "Henry V" which was made into a television production in 1966.

Filmography:

• Love & Larceny (1985) (TV)
• 2010: The Year We Make Contact (1984) (voice)
• (1976) (TV mini series) (voice)
• Sleeper (1973) (voice)
• Talking to a Stranger (1971) (TV mini series)
• 2001: A Space Odyssey (1968) (voice)
• Henry V (1966) (TV)
• Twelfth Night (1964) (TV)
• The Other Man (1963) (TV mini series)
• (1961)
• (1961)
• One Plus One (1961)
• Just Mary (1960) TV Series (voice)
• Oedipus Rex (1957)