Claire Voisin is an algebraic geometer recognized for her work on Hodge theory and algebraic cycles. She is known particularly for her construction of compact Kähler manifolds not homeomorphic to complex projective manifolds, for her proof of the generic Green conjecture on syzygies of canonical curves, and for her contribution to the stable Lüroth problem. Voisin entered Ecole Normale Supérieure in 1981 and she defended her PhD thesis in 1986 under the supervision of Arnaud Beauville. She then got a permanent position at CNRS, that she kept until 2016 where she became Professor at College de France (Algebraic geometry chair). Leaving Collège de France in October 2020, she went back to CNRS as a Senior researcher.

She received the Heinz Hopf prize in 2015 and the Shaw prize in 2017.  She is a member of the Académie des sciences and foreign member of the National Academy of Sciences and the Accademia Nazionale dei Lincei.