That Night in Varennes (Italian: Il mondo nuovo; French: La Nuit de Varennes) is a 1982 French-Italian drama film directed by Ettore Scola. It is based on a novel by Catherine Rihoit. It tells the story of a fictional meeting among Restif de la Bretonne, Giacomo Casanova, Thomas Paine and Sophie de la Borde (a lady in waiting to the queen). They are all traveling together in a coach that is a few hours behind the one that is carrying King Louis XVI and Marie Antoinette in their flight to Varennes during the French Revolution.

The film was entered into the 1982 Cannes Film Festival. The film was nominated for Best Foreign Language Film by the U.S. National Board of Review of Motion Pictures.