Ernest Borisovich Vinberg (Russian: ?????? ????????? ???????; born 26 July 1937) is a Russian mathematician, who works on discrete subgroups of Lie groups and representation theory.
He introduced Vinberg's algorithm and the Koecher–Vinberg theorem.
He is a recipient of the Humboldt Prize.
He is on the executive committee of the Moscow Mathematical Society.
In 1983 he was an Invited Speaker with a talk on Discrete reflection groups in Lobachevsky spaces at the International Congress of Mathematicians in Warsaw.
In 2010 he was elected a member of the American Academy of Arts and Sciences.
His doctoral students include Victor Kac and Boris Weisfeiler.