The men's Greco-Roman bantamweight competition at the 1964 Summer Olympics in Tokyo took place from 16 to 19 October at the Komazawa Gymnasium.

[1] Bantamweight was the second-lightest category, including wrestlers weighing 52 to 57 kilograms (114.6 to 125.7 lb).

If 2 wrestlers remained, point totals were ignored and they faced each other for gold and silver (if they had already wrestled each other, that result was used).

Three out of the four wrestlers were eliminated in this round, including the undefeated Trostianskiy (four wins by decision, one tie) who took silver.

Ichiguchi, as the only man left, won the gold medal.