Edmond O'Brien as Winston Smith of the Outer Party

Jan Sterling as Julia of the Outer Party

Michael Redgrave as O'Connor of the Inner Party

David Kossoff as Charrington the Junk Shop Owner

Mervyn Johns as Jones

Donald Pleasence as R. Parsons

Carol Wolveridge as Selina Parsons

Ernest Clark as Outer Party Announcer

Patrick Allen as Inner Party Official

Ronan O'Casey as Rutherford

Bartlett Mullins as Syme

Michael Ripper as Outer Party Orator

Ewen Solon as Outer Party Orator

Kenneth Griffith as Prisoner

Walter Gotell as Guard (uncredited)

Patrick Troughton as Man on Telescreen (uncredited)

John Vernon as Big Brother (uncredited)

Barbara Keogh as Special Woman (uncredited)

Barbara Cavan as Woman (voice) (uncredited)

Anthony Jacobs as Telescreen (voice) (uncredited)

Bernard Rebel as Kalador (uncredited)