André Breton (French pronunciation: [ɑ̃dʁe bʁətɔ̃]; 19 February 1896 – 28 September 1966) was a French writer and poet. He is known best as the founder of Surrealism. His writings include the first Surrealist Manifesto (Manifeste du surréalisme) of 1924, in which he defined surrealism as "pure psychic automatism".

Born to a family of modest means in Tinchebray (Orne) in Normandy, he studied medicine and psychiatry. During World War I he worked in a neurological ward in Nantes, where he met the devotee of Alfred Jarry, Jacques Vaché, whose anti-social attitude and disdain for established artistic tradition influenced Breton considerably. Vaché committed suicide at age 24, and his war-time letters to Breton and others were published in a volume entitled Lettres de guerre (1919), for which Breton wrote four introductory essays.

Breton married his first wife, Simone Kahn, on 15 September 1921. The couple relocated to rue Fontaine # 42 in Paris on 1 January 1922. The apartment on rue Fontaine became home to Breton's collection of more than 5,300 items: modern paintings, drawings, sculptures, photographs, books, art catalogs, journals, manuscripts, and works of popular and Oceanic art.