L'Humeur vagabonde () is a 1955 novel by the French writer Antoine Blondin. It tells the story of a man who leaves his wife and children to make it in Paris, but returns home only to be mistaken as his wife's lover. The book was Blondin's third novel.
The novel was adapted into a 1972 film with the same title. The film was directed by ÃÂdouard Luntz and stars Jeanne Moreau, Michel Bouquet, Madeleine Renaud and Eric Penet.