The men's 1500 metres was the third-longest of the seven men's track races in the Athletics at the 1964 Summer Olympics program in Tokyo. It was held on 17 October, 19 October, and 21 October 1964. 50 athletes from 34 nations entered, with 7 not starting the first round. The maximum number of athletes per nation had been set at 3 since the 1930 Olympic Congress. The first round was held on 17 October, with the semifinals on 19 October and the final on 21 October.