Léon Barsacq (18 October 1906 – 23 December 1969) was a Russian-born and naturalized French production designer, art director and set decorator. He was nominated for an Academy Award in the category Best Art Direction for the film The Longest Day.^[1] He was the brother of French theatre director André Barsacq and the father of film actor Yves Barsacq.

• Compliments of Mister Flow (1936)
• Southern Mail (1937)
• I Was an Adventuress (1938)
• The World Will Tremble (1939)
• Beating Heart (1940)
• The Mysteries of Paris (1943)
• Children of Paradise (1945)
• The Last Vacation (1948)
• Eternal Conflict (1948)
• White Paws (1949)
• Maya (1949)
• The Glass Castle (1950)
• Two Pennies Worth of Violets (1951)
• Imperial Violets (1952)
• The Beauty of Cadiz (1953)
• Their Last Night (1953)
• The Lady of the Camellias (1953)
• The Ambassador's Daughter (1956)
• All the Gold in the World (1961)
• The Longest Day (1962)