Igor Alekseyevich Shiklomanov (Russian: Игорь Алексеевич Шикломанов; February 28, 1939, Tver Oblast – August 22, 2010, St. Petersburg) was a Russian hydrologist, Doctor of Sciences,^[1] Professor, Director of the Russian State Hydrological Institute from 1981,^[1] Academician of the Russian Academy of Natural Sciences (since 2001),^[2] Honored Scientist of the Russian Federation (1999),^[1] Laureate of the 2001 International Hydrology Prize and of the 2006 Tyler Prize for Environmental Achievement.^[3][4]

He graduated from the Russian State Hydrometeorological University in 1961. In 1967, he defended his Candidate's Dissertation. He was a student of Professor Daniil Sokolovsky. In 1977, he defended his doctoral dissertation.

I.A.Shiklomanov is the author more than 220 scientific papers including 11 monographs.