Andrei Yuryevich Okounkov (Russian: ?????´? ?´?????? ???????´?, Andrej Okun'kov) (born July 26, 1969) is a Russian mathematician who works on representation theory and its applications to algebraic geometry, mathematical physics, probability theory and special functions.
He is currently a professor at Columbia University and the academic supervisor of HSE International Laboratory of Representation Theory and Mathematical Physics.
In 2006, he received the Fields Medal "for his contributions to bridging probability, representation theory and algebraic geometry."