The men's Greco-Roman heavyweight competition at the 1948 Summer Olympics in London took place from 3 to 6 August at the Empress Hall, Earls Court Exhibition Centre.

[1] Heavyweight was the heaviest category, including wrestlers weighing over 87 kilograms (191.8 lb).

[2] This Greco-Roman wrestling competition continued to use the "bad points" elimination system introduced at the 1928 Summer Olympics for Greco-Roman and at the 1932 Summer Olympics for freestyle wrestling, with the slight modification introduced in 1936.

[3] After three rounds, the three medalists were decided and they wrestled to determine who received which medal.

Kirecci won the final match to take the gold medal; Fantoni's loss put him in third place.