| Ivan Privalov | |
| Birth Date: | 11 February 1891 |
| Birth Place: | Nizhny Lomov, Russian Empire |
| Death Place: | Moscow, Soviet Union |
| Field: | Mathematics |
| Work Institution: | Imperial Saratov University (1917–1922) Moscow State University (1922–1941) |
| Alma Mater: | Moscow State University |
| Doctoral Advisor: | Dmitri Egorov Nikolai Luzin |
| Known For: | Works on analytical functions, Luzin-Privalov theorems. |
Ivan Ivanovich Privalov (Russian: Ива́н Ива́нович Привáлов; 11 February 1891 – 13 July 1941) was a Soviet and Russian mathematician best known for his work on analytic functions.
Privalov graduated from Moscow State University (MSU) in 1913 studying under Dmitri Egorov and Nikolai Luzin. He obtained his master's degree from MSU in 1916 and became professor at Imperial Saratov University (1917—1922). In 1922 he was appointed as Professor at MSU and worked there for the rest of his life.
Corresponding member of the Academy of Sciences of the Soviet Union (since 1939). Member of the French Mathematical Society (Société mathématique de France) and the Mathematical Circle of Palermo (Circolo Matematico di Palermo).
Privalov wrote Cauchy Integral (1918) which built on work by Fatou. He also worked on many problems jointly with Luzin. In 1934 he studied subharmonic functions, building on the work of Riesz.