Hibernatus is a 1969 French-Italian comedy film directed by Édouard Molinaro and written by Jean Bernard-Luc.

A man frozen for 65 years is found in the ice of the North Pole by a scientific polar expedition.

Edmée de Tartas (Claude Gensac), born Fournier, is identified as the granddaughter of Paul and convinces her husband, Hubert Barrère de Tartas (Louis de Funès), that Paul must be given back to his family, while the government wishes to treat Paul as a research subject.

After a kidnapping and a pursuit, the authorities reluctantly agree, but impose, for the sake of Paul's mental health, that his environment be the same as in 1905.

First under control, the situation gradually deteriorates especially when Paul's actions become a threat to Hubert's plan to marry his son to the daughter of Crepin-Jaujard, one of his business partners.