Sidonie in Japan (French: Sidonie au Japon) is a 2023 romantic drama film co-written and directed by Élise Girard and starring Isabelle Huppert, Tsuyoshi Ihara and August Diehl.

Established French writer Sidonie Perceval mourns her late husband, Antoine, while traveling to Japan for a reedition of her first book.

[3] The film is a co-production of France, Germany, Switzerland and Japan.

[3][4] It is one of the last works of co-writer Sophie Fillières, who died two months before its premiere.

[3] Sidonie in Japan had its world premiere in the Giornate degli Autori (Venice Days) section of the 80th Venice International Film Festival on 1 September 2023.