A definitive filmography for Léonce Perret would be virtually impossible given that he wrote, acted in, directed or produced more than 400 films.
Of those, only roughly one third are still available today.
The remaining copies are stored mostly at the Gaumont Film Library, the Cinémathèque française, the Centre national du cinéma et de l'image animée and in several other European film libraries such as the Nederlands Filmmuseum in Amsterdam.