Cet homme est dangereux

This Man Is Dangerous (Cet homme est dangereux) is a 1953 French crime thriller film directed by Jean Sacha, starring Eddie Constantine, Colette Deréal and Grégoire Aslan. It is an adaptation of Peter Cheyney's 1936 novel of the same name and marked Constantine's second appearance as Lemmy Caution, following his debut in the role in La môme vert-de-gris. Like its predecessor, the film proved successful at the box office. It opened in France on 22 November 1953 and reached West German cinemas on 19 February 1954.

The screenplay was written by Jacques Berland, and the 92-minute film's sets were designed by art director Jean d'Eaubonne.