Shot back to back with its sequel The Three Musketeers - Part II: Milady (2023) for a total shoot of 150 days that started on August 16, 2021 and wrapped on June 3, 2022.
Almost entirely shot on location in France. Out of the 150 days shooting this film and its sequel The Three Musketeers - Part II: Milady (2023) took, only one day was scheduled for filming in studio.
François Civil performed 90% of his own stunts in the two films following an intense six-month preparation on fencing, sword-fighting and horseback riding.
Producer Dimitri Rassam said he and director Martin Bourboulon watched several films for inspiration during preparation, including Cyrano de Bergerac (1990), Queen Margot (1994), The Duellists (1977) and Raiders of the Lost Ark (1981).
Olympic Épée Champion Yannick Borel was the fencing trainer for François Civil, Vincent Cassel, Romain Duris and Pio Marmaï.