Aleksandr Georgievich Martyshkin (Russian: Александр Георгиевич Мартышкин, 26 August 1943 – 29 October 2021) was a Russian rower who competed for the Soviet Union in the 1968 Summer Olympics and in the 1972 Summer Olympics. He was born in Moscow. In 1968 he was a crew member of the Soviet boat which won the bronze medal in the eight event. Four years later he finished fourth with the Soviet boat in the eight competition.