William Sylvester

January 31, 1922 - January 25, 1995 Oakland, California, USA
IMDb

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.

His titles like 2001: A Space Odyssey, Gorgo, and Devil Doll - his biggest roles first.
Last updated: August 19, 2026

Watched: 0/25
Weighted avg: 7.66 /10
  • 1
    1
    1968April 1968 by Stanley Kubrick
    Starring as Dr. Heywood Floyd
    Starring as Dr. Heywood Floyd
    7.75 Excellent
  • 2
    2
    1961February 1961 by Eugène Lourié
    Starring as Sam Slade
    Starring as Sam Slade
    5.16 Okay--
  • 3
    3
    1964September 1964 by Lindsay Shonteff
    Starring as Mark English
    Starring as Mark English
    5.02 Okay--
  • 4
    4
    1973October 1973 by John Newland
    Minor role as Tom Henderson
    Minor role as Tom Henderson
    5.71 Okay+
  • 5
    5
    1965May 1965 by Lance Comfort
    Lead role as Paul Baxter
    Lead role as Paul Baxter
    5.49 Okay
  • 6
    6
    1974February 1974 by Peter Hyams
    Supporting as Mr. Weldman
    Supporting as Mr. Weldman
    5.87 Okay+
  • 7
    7
    1976January 1976 by Don McDougall
    Starring as Leonard Driscoll
    Starring as Leonard Driscoll
    4.91 Mediocre++
  • 8
    8
    1961January 1961 by Cliff Owen
    Lead role as Layton / Steve Ross
    Lead role as Layton / Steve Ross
    5.95 Okay++
  • 9
    9
    1964March 1964 by Robert Tronson
    Starring as Gordon Lonsdale
    Starring as Gordon Lonsdale
    6.15 Good--
  • 10
    10
    1955November 1955 by Guy Green
    Starring as Dave Forrester
    Starring as Dave Forrester
    5.93 Okay++
  • 11
    11
    1976 by Leslie Stevens
    Starring as Leonard Driscoll
    Starring as Leonard Driscoll
    5.97 Okay++
  • 12
    12
    1954September 1954 by Terence Fisher
    Starring as Philip Vickers
    Starring as Philip Vickers
    5.79 Okay+
  • 13
    13
    1957April 1957 by Philip Leacock
    Starring as Alec Douglas
    Starring as Alec Douglas
    5.95 Okay++
  • 14
    14
    1964January 1964 by Lance Comfort
    Lead role as Paul Gregory
    Lead role as Paul Gregory
    Needs more reviews
  • 15
    15
    1968August 1968 by Frederick Goode
    Lead role as Paul Carver
    Lead role as Paul Carver
    Needs more reviews
  • 16
    16
    1953July 1953 by Maurice Elvey
    Starring as Jimmy
    Starring as Jimmy
    5.99 Okay++
  • 17
    17
    2001January 2001 by Paul Joyce
    Minor role as Dr. Heywood R. Floyd (archive footage) (uncredited)
    Minor role as Dr. Heywood R. Floyd (archive footage) (uncredited)
    6.06 Okay++
  • 18
    18
    1958October 1958 by John Pomeroy
    Lead role as John Kevin
    Lead role as John Kevin
    Needs more reviews
  • 19
    19
    1949October 1949 by Edward Dmytryk
    Supporting as Giovanni
    Supporting as Giovanni
    5.82 Okay+
  • 20
    20
    1953February 1953 by Philip Leacock
    Supporting as Mac
    Supporting as Mac
    6.02 Okay++
  • 21
    21
    1954June 1954 by Maurice Elvey
    Lead role as Jim Barnes
    Lead role as Jim Barnes
    Needs more reviews
  • 22
    22
    1953November 1953 by Lewis Gilbert
    Supporting as Texas
    Supporting as Texas
    6.18 Good--
  • 23
    23
    1953February 1953 by J. Lee Thompson
    Supporting as Len Turner
    Supporting as Len Turner
    5.92 Okay++
  • 24
    24
    1959March 1959 by Lewis Allen
    Supporting as Hermann
    Supporting as Hermann
    Needs more reviews
  • 25
    25
    1970March 1970 by Sidney J. Furie
    Minor role as Paul Harrison
    Minor role as Paul Harrison
    Needs more reviews
Co-starring with:
Bernard Lee 2 titles
Keir Dullea 2 titles
Gary Lockwood 1 title
Richard Dysart 1 title
Elliott Gould 1 title
Douglas Rain 1 title
David Kelly 1 title
Sid Haig 1 title