At the 1964 Summer Olympics in Tokyo, eighteen swimming events were contested, ten for men and eight for women.

This competition also marked the debut of electronic touchpads for timing.

15-year-old Sharon Stouder won four medals, three of them gold.

Swimming at the 1964 Olympics featured a total of 18 events (10 for men and 8 for women).

On the women's side, the 400 metre individual medley was added.