At the 1948 Summer Olympics in London, 11 swimming events were contested, six for men and five for women. All swimming events took place at the Empire Pool. There was a total of 249 participants from 34 countries competing.
249 swimmers from 34 nations competed.
Coordinates: 51°33′29″N 0°16′59″W / 51.5581°N 0.2830°W