Ivan Petrovich Pavlov (Russian: Ива́н Петро́вич Па́влов; September 26 1849 – February 27, 1936) was a famous Russian physiologist.
Inspired by the progressive ideas which D. I. Pisarev, the most eminent of the Russian literary critics of the 1860s and I. M. Sechenov, the father of Russian physiology, were spreading, Pavlov abandoned his religious career and decided to devote his life to science. In 1870 he enrolled in the physics and mathematics faculty at the University of Saint Petersburg to take the course in natural science.
Ivan Pavlov was born in Ryazan in the Central Federal District of Russia, where his father, Peter Dmitrievich Pavlov, was a village priest. He began his higher education as a student at the Ryazan Ecclesiastical Seminary, but then dropped out and enrolled at the University of Saint Petersburg to study the natural sciences and became a physiologist.