Semyon Ivanovich Marushkin (Russian: ????? ???????? ????????, 24 July 1919 – 4 September 1993) was a welterweight Greco-Roman wrestler from Russia who competed at the 1952 Summer Olympics.
He won his first three bouts, but then lost to the eventual silver medalist Gösta Andersson and ended in a fourth place.
Domestically he won the Soviet title in Greco-Roman (1950 and 1951) and freestyle wrestling (1947).Marushkin fought in World War II, and after retiring from competitions had a long career as a wrestling coach and referee.