Michèle Raynaud (born Michèle Chaumartin;[1](1938-01-09)January 9, 1938 [2][3]) is a French mathematician, who works on algebraic geometry and who worked with Alexandre Grothendieck in Paris in the 1960s at the Institut des hautes études scientifiques (IHÉS).
Raynaud was a member of the séminaire de géométrie algébrique du Bois Marie (SGA) 1 and 2 and obtained her doctorate in 1972, supervised by Grothendieck at Paris Diderot University.
Her thesis was entitled Théorèmes de Lefschetz en cohomologie cohérente et en cohomologie étale.
[4] Grothendieck wrote about her doctoral thesis in Récoltes et Semailles (p.168 Chapitre 8.1.)
describing it as original, entirely independent, and a major work.