Sergei Vladimirovich Ivanov (Сергей Владимирович Иванов; born 31 May 1972) is a leading Russian mathematician working in differential geometry and mathematical physics.
In 2014, he received, jointly with Yuri Burago and Dmitri Burago, the Leroy P. Steele Prize for their book A course in metric geometry published by the American Mathematical Society in 2001.
In addition to his research on differential geometry, Ivanov also works on informatics.