At the 1964 Summer Olympics in Tokyo, the athletics competition included 36 events, 24 for men and 12 for women. The women's 400 metres and women's pentathlon events were newly introduced at these Games. There were a total number of 1016 participating athletes from 82 countries.

Sir Peter George Snell was a New Zealand middle-distance runner. He won three Olympic gold medals, and is the only man since 1920 to have won the 800 and 1500 metres at the same Olympics, in 1964.