
William Sylvester (January 31, 1922 – January 25, 1995) was an American TV and film actor. His most famous film credit was Dr. Heywood Floyd in Stanley Kubrick's 2001 A Space Odyssey (1968). Born in Oakland, California and married at one time to the British actress Veronica Hurst, he moved to England after the Second World War and became a staple of British B films at a time when American and Canadian actors were much in demand in order to give indigenous films some appeal in the US. As a result, he gained top billing in one of his very first films, House of Blackmail (1953), directed by the veteran filmmaker Maurice Elvey, for whom he also made What Every Woman Wants the following year. He also starred in such minor films as The Stranger Came Home (1954, for Hammer), Dublin Nightmare (1958), Offbeat (1960), Information Received (1961), Incident at Midnight, Ring of Spies and Blind Corner (all 1963). There were also lead roles in four British horror films: Gorgo (1960), Devil Doll (1963), Devils of Darkness (1964) and The Hand of Night (1966). Among his many TV credits were a 1959 BBC version of Shakespeare's Julius Caesar (playing Mark Antony), The Saint, The Baron, The High Chaparral, Harry O and The Six Million Dollar Man. His later films included You Only Live Twice (1967) and, back in the USA after his prominent role for Kubrick, Busting (1973), The Hindenburg (1975) and Heaven Can Wait (1978). He died in Sacramento, California in 1995, aged 72.
37 movies · 23 TV shows, newest first

The 9th Wonder of the World: The Making of 'Gorgo'
2013
2001: The Making of a Myth
2001
Roger Moore: A Matter of Class
1995
First Family
1980
Big Shamus, Little Shamus
1979
Buck Rogers in the 25th Century
1979
Heaven Can Wait
1978
What Really Happened to the Class of '65?
1977
The Hardy Boys / Nancy Drew Mysteries
1977
Quincy, M.E.
1976
Gemini Man
1976
Riding with Death
1976
The Hindenburg
1975
Switch
1975
Harry O
1974
Busting
1974
The Six Million Dollar Man
1974
Don't Be Afraid of the Dark
1973
The Magician
1973
Banacek
1972
Cannon
1971
San Francisco International Airport
1970
The Lawyer
1970
The Challengers
1970
McCloud
1970
Marcus Welby, M.D.
1969
The Syndicate
1968
The Hand of Night
1968
Red and Blue
1968
2001: A Space Odyssey
1968
The High Chaparral
1967
You Only Live Twice
1967
The F.B.I.
1965
Green Acres
1965
The Troubleshooters
1965
Devils of Darkness
1965
Devil Doll
1964
Ring of Spies
1964
Blind Corner
1964
Incident at Midnight
1963
The Saint
1962
Information Received
1961Drama 61-67
1961
Gorgo
1961
Offbeat
1961
Danger Man
1960
Whirlpool
1959The Caine Mutiny Court-Martial
1958
Dublin Nightmare
1958
High Tide at Noon
1957
Armchair Theatre
1956
Portrait of Alison
1955
The Unholy Four
1954
What Every Woman Wants
1954
Albert R.N.
1953
House of Blackmail
1953
Appointment in London
1953
The Yellow Balloon
1953
They Were Not Divided
1950
Give Us This Day
1949