Edmond O'Brien
Winston Smith of the Outer Party

Jan Sterling
Julia of the Outer Party

Michael Redgrave
O'Connor of the Inner Party

David Kossoff
Charrington the Junk Shop Owner

Mervyn Johns
Jones

Donald Pleasence
R. Parsons

Carol Wolveridge
Selina Parsons

Ernest Clark
Outer Party Announcer

Patrick Allen
Inner Party Official

Ronan O'Casey
Rutherford

Bartlett Mullins
Syme

Michael Ripper
Outer Party Orator

Ewen Solon
Outer Party Orator

Kenneth Griffith
Prisoner

Walter Gotell
Guard (uncredited)

Patrick Troughton
Man on Telescreen (uncredited)

John Vernon
Big Brother (uncredited)

Barbara Keogh
Special Woman (uncredited)

Barbara Cavan
Woman (voice) (uncredited)

Anthony Jacobs
Telescreen (voice) (uncredited)