The “Call Me By Your Name” alum joins a cast that includes Tilda Swinton and Bill Murray.
Wes Anderson will write and direct the film; Scott Rudin is attached to produce.
“The French Dispatch” follows journalists at an American newspaper bureau in 1950s Paris. Although the film is set in Paris, shooting has begun in Angouleme in southwestern France.
Rounding out the cast are Frances McDormand, Benicio del Toro and Jeffrey Wright, among others.
Chalamet, who recently starred in Amazon’s “Beautiful Boy,” will next be seen in the “Dune” remake, as well as Greta Gerwig’s “Little Women” and Netflix’s “The King.”