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

[1] Welterweight was the third-heaviest category, including wrestlers weighing 70 to 78 kilograms (154.3 to 172.0 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).

Both bouts were drawn, leaving all four wrestlers eliminated at the same time and with the same score of 7 points.

A final round was needed to finish the four-way round-robin.

Nyström and Dubicki then tied; Nyström finished at 0-0-3 (6 points) to match Petkov, while Dubicki had the only loss of the round-robin for a 0-1-2 (7 points) finish.