Anatoly Ivanovich Grigoriev was a Soviet and Russian physiologist. He was a Doctor of Sciences (1980), Professor at the Lomonosov Moscow State University, Honored Scientist of the Russian Federation (1996). Laureate of the 1989 USSR State Prize and winner of the 2001 State Prize of the Russian Federation. Disciple of Oleg Gazenko, Grigoriev was one of the leading scientists in bioastronautics and space flight medicine.