The knockout stage of the 1964 Summer Olympics football tournament was the second and final stage of the competition, following the first round. Played from 18 to 23 October, the knockout stage ended with the final held at the National Stadium in Tokyo, Japan. The top two team from each group advanced to the knockout stage to compete in a single-elimination tournament. There were eleven matches in the knockout stage, including play-offs played between the losing teams of the quarter-finals and semi-finals for extra allocated finishing positions.