The Deadly Affair
- Gore: 1967
- Nyika: United Kingdom
- Genre: Thriller, Mystery, Drama
- Studio: Sidney Lumet Film Productions, Columbia Pictures
- Keyword: secret agent
- Mutungamiriri: Sidney Lumet
- Cast: James Mason, Simone Signoret, Maximilian Schell, Harriet Andersson, Harry Andrews, Kenneth Haigh