Saint-Cyr refers to the popular child-saint Saint Quiricus (Cyriacus), whose following was strong in France because relics were brought back from Antioch by the 4th-century Bishop Saint Amator of Auxerre.

Saint-Cyr may refer to:

• Claude Carra Saint-Cyr (1760–1830), French general
• Claude Saint-Cyr (1911–2002), French fashion designer
• Jacques-Antoine de Révéroni Saint-Cyr (1767–1829), French man of letters
• Laurent, Marquis de Gouvion Saint-Cyr (1764–1830), Marshal of France
• Cyprian St Cyr, pseudonym of Eric Berne, Canadian-American psychoanalyst and founder of Transactional Analysis
• Lili St. Cyr (1918–1999), pseudonym of Willis Marie Van Schaac, prominent American burlesque stripper
• Adolphus Frederic St. Sure (1869–1949), United States District Judge.(name anglicized)
• John St. Cyr (1936-2022), American politician and judge
• Johnny St. Cyr (1890–1966), American banjoist
• Jordan St. Cyr, Canadian recording artist

• Immigration and Naturalization Service v. St. Cyr (2001), a U.S. Supreme Court case involving habeas corpus relief for deportable aliens
• The King's Daughters, English title of the 2000 French film Saint-Cyr

This disambiguation page lists articles associated with the title Saint-Cyr.
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