The Ferret (French: Le furet) is a 1950 French crime film directed by Raymond Leboursier and starring Jany Holt, Colette Darfeuil and Pierre Renoir.

[1] It features the character of Inspector Wens, who had appeared in several other films including The Murderer Lives at Number 21.

Location shooting took place around Paris including the city's Orly Airport.

The film's sets were designed by the art director Roland Quignon.

A mysterious figure signing himself "The Ferret" keeps sending letters to the police, tipping them off about murders that are to be committed around Paris.