The famous sex scene between Donald Sutherland and Julie Christie was a last minute on-set idea from director Nicolas Roeg who felt that otherwise the film would have too many scenes of the couple arguing. Most of the scenes around it are improvised.
Renato Scarpa who plays inspector Longhi didn't speak any English. He just read the lines he'd been given without knowing what they meant, which added to the sinister quality of his character.
Writer Allan Scott was pleased to see a bottle of The Macallan (of which company he was the deputy chairman) beside the bed in the big sex scene.
Donald Sutherland and Julie Christie met for the first time on the set of this film. The first scene they had to shoot was the sex scene, as Roeg wanted to "get it out of the way" and then move on to the "bone" of the matter. Christie was terrified.
Clips from this film (along with others directed by Nicolas Roeg) appear in Big Audio Dynamite's 'E=MC2' video (1986).
In order to avoid an X-certificate rating for the film's American release, 9 frames (less than half a second) had to be cut from the intimate love sequence between Donald Sutherland and Julie Christie.
The British Film Institute ranked Don't Look Now #8 on their list of the top 100 British Films. The Times also ranked the film #18 on their list of 100 greatest films.
In the UK the film was released to theaters on double feature with The Wicker Man (1973).
Pino Donaggio was chosen as the films composer after one of the producers had an inspiring vision when he saw Donaggio riding on a gondola during location scouting in Venice.
The book on John's desk in the opening sequence is entitled "Beyond the Fragile Geometry of Space" - yet another ominous foreshadowing.
The films Italian title A Venezia... un dicembre rosso shocking translates to "In Venice... a shocking red December" in English.