Incredible but True (French: Incroyable mais vrai) is a 2022 French-Belgian black comedy film written and directed by Quentin Dupieux.

In the film, Alain (Chabat) and Marie (Drucker) see their lives turned upside down after moving into a new home which has a mysterious tunnel in the basement.

The estate agent, Franck Chaise, reveals the tunnel in the basement of one house causes anyone who enters to reverse ageing by three days, but makes time to fast forward by 12 hours.

Alain runs into Franck and asks about the tunnel's health impacts, who advises it to be used in moderation to avoid serious physical and psychological damage.

In early January 2021 Wild Bunch International announced the release of several French films despite the strict restrictions imposed by the COVID-19 pandemic.