The men's freestyle heavyweight competition at the 1956 Summer Olympics in Melbourne took place from 28 November to 1 December at the Royal Exhibition Building.

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

[2] This freestyle 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, as modified in 1952 (adding medal rounds and making all losses worth 3 points—from 1936 to 1948 losses by split decision only cost 2).

At the end of each round, any wrestler with at least 5 points was eliminated.

This elimination continued until the medal rounds, which began when 3 wrestlers remained.