Petros Galaktopoulos (born 7 June 1945) is a Greek former Olympic Greco-Roman wrestler. Born in Athens, Galaktopoulos competed in five olympic tournaments from 1964 till 1976. He won two olympic medals, in the 1968 and 1972 Summer Olympics.
Galaktopoulos was born in Athens, Greece and he was member of Ethnikos G.S. Athens. During his career as a Greco-Roman wrestler, Galaktopoulos won many trophies at European and international level. At the 1964 Olympics, Galaktopoulos competed at the featherweight event and he took the 15th place. At the 1968 Olympics, he competed at the lightweight event. In seven matches, Galaktopoulos lost only to the winner of the category, Muneji Munemura and as a result he won the bronze medal. During 1972 Olympics, Galaktopoulos won the silver medal at the 74 kg class after losing to Vítězslav Mácha at the final. Four years later, at the 1976 Summer Olympics, he was placed 8th.