Alain Lascoux (17 October 1944 – 20 October 2013) was a French mathematician at Université de Paris VII, University of Marne la Vallée and Nankai University.
He worked for twenty years with Marcel-Paul Schützenberger on properties of the symmetric group.
They wrote many articles together and had a major impact on the development of algebraic combinatorics.
They succeeded in giving a combinatorial understanding of various algebraic and geometric questions in representation theory.
Lascoux was an invited speaker at the 1998 International Congress of Mathematicians in Berlin, Germany.