1770 in France

• Monarch – Louis XV{{cite web|publisher=BBC|work=History|title=Louis XV (1710-1774)|url=https://www.bbc.co.uk/history/historic_figures/louis_xv.shtml|access-date=2025-05-21}}

• 16 May – 14-year-old Marie Antoinette of Austria marries Louis-Auguste (who in 1774 becomes King Louis XVI of France) at the Palace of Versailles
• 20 May – A stampede at a celebration of the newly wedded Marie Antoinette and Louis-Auguste in Paris kills more than a hundred people{{cite book|author1=Delalex, Hélène|author2=Maral, Alexandre|author3=Milovanovic, Nicolas|title=Marie-Antoinette|url=https://books.google.com/books?id=wgVVDQAAQBAJ|date=2016|publisher=Getty Publications|location=Los Angeles|page=25|isbn=9781606064832}}
• 3 June – The 7.5 {{M|w|link=y}} Port-au-Prince earthquake affects the French colony of Saint-Domingue with a maximum Mercalli intensity of X (Extreme), killing 250 or more
• 14 June–3 October – Charles Messier observes Lexell's Comet as it passes closer to Earth than any other in recorded history{{cite web|title=D/1770 L1 (Lexell)|url=http://cometography.com/pcomets/1770l1.html|work=Gary W. Kronk's Cometography|accessdate=2025-05-21}}
• 7 December – Louis XV issues the Edict of December, dismissing rebellious magistrates of the Parlements of Paris and the other 13 provinces{{cite book|first=Leonore|last=Loft|title=Passion, Politics and Philosophie: rediscovering J.-P. Brissot|publisher=Greenwood|location=Westport, Ct|year=2002|page=55}}{{cite book|first=Dale K.|last=Van Kley|title=The Religious Origins of the French Revolution: from Calvin to the Civil Constitution, 1560-1791|publisher=Yale University Press|location=New Haven|year=1996|page=249}}
• 24 December – César Gabriel de Choiseul is dismissed from his position as Secretary of the Navy by the king{{cite book|first=Antony|last=Strugnell|title=Diderot’s Politics: a study of the Evolution of Diderot’s Political Thought after the Encyclopedie|publisher=Nijhof|year=2012|page=123}}
• Cemetery of Saint-Louis, Versailles established
• Joseph-Louis Lagrange proves Bachet's conjecture
• The Baron d'Holbach's (anonymous) materialist work Le Système de la Nature ou Des Loix du Monde Physique et du Monde Moral is published

• 20 January – The new Théâtre du Palais-Royal (rue Saint-Honoré), the first purpose-built opera house in Paris, designed by Pierre-Louis Moreau-Desproux, is inaugurated with a performance of Rameau's Zoroastre{{cite book|last=Pitou|first=Spire|year=1983|title=The Paris Opéra: An Encyclopedia of Operas, Ballets, Composers and Performers: Genesis and Glory, 1671–1715|location=Westport, Ct|publisher=Greenwood|isbn=9780313214202|page=26}}{{cite book|last=Mead|first=Christopher Curtis|year=1991|title=Charles Garnier's Paris Opera|location=Cambridge, Mass.|publisher=MIT Press|isbn=978-0-262-13275-6|page=45}}
• 16 May – The new Opéra royal de Versailles, designed by Ange-Jacques Gabriel, is inaugurated.{{cite web|last=Praefcke|first=Andreas|url=http://www.andreas-praefcke.de/carthalia/france/f_versailles_gabriel.htm|work=Carthalia|title=Versailles: Théâtre Gabriel / Opéra Royal|language=English|accessdate=2025-05-21}}
• 27 October – First performance of the opera Les deux avares, written by André Grétry, at Fontainebleau
• December – The Library of the Sorbonne in Paris is opened to the public{{cite book|first=David H.|last=Stam|title=International Dictionary of Library Histories|url=https://books.google.com/books?id=APtYCwAAQBAJ&pg=PA881|year=2001|publisher=Routledge|location=London|isbn=978-1-136-77785-1|page=881}}
• The Théâtre Déjazet is established in Paris by the Comte d'Artois
• Anne Vallayer-Coster is admitted to the Académie royale de peinture et de sculpture at the age of 26McKinven, Mary Jane (June 2002). Stunning Still Lifes by Anne Vallayer-Coster, Foremost 18th-Century Painter in Court of Marie-Antoinette. Washington, DC: National Gallery of Art.

• 5 February – Alexandre Brongniart, chemist, mineralogist and zoologist (died 1847)
• 21 February – Georges Mouton, Marshal of France (died 1838)
• 2 March – Louis-Gabriel Suchet, Marshal of France (died 1826)
• 25 March – Antoine Richepanse, revolutionary general (died 1802)
• 10 May – Louis-Nicolas Davout, Marshal of France (died 1823)
• 18 December – Nicolas Joseph Maison, Marshal of France, Minister of War (died 1840)

File:Esprit Joseph Antoine Blanchard.jpg ]]

• 14 March – Nicolas-Charles-Joseph Trublet, clergyman and moralist (born 1697)
• 19 April – Esprit Antoine Blanchard, musician (born 1696){{cite encyclopedia |title=Blanchard, Esprit Joseph Antoine |page=385 |encyclopedia=Salmonsens Konversationsleksikon |volume=3 |year=1915 |edition=2 |editor=Blangstrup, Chr. |editor-link=Christian Blangstrup |publisher=J.H. Schultz Forlagsboghandel |location=Copenhagen |language=da |url=https://runeberg.org/salmonsen/2/3/0431.html |access-date=2015-08-28}}
• 25 April – Jean-Antoine Nollet, clergyman and physicist (born 1700)
• 30 May – François Boucher, painter (born 1703)
• 3 August – Guillaume-François Rouelle, chemist and apothecary (born 1703)
• 28 November – Charles-Jean-François Hénault, historian (born 1685)
• 15 December – Pierre-Joseph Alary, ecclesiastic and writer (born 1689)

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Category:1770s in France