For swimming underwater with swimfins and/or breathing apparatus, see scuba diving or diving activities.'

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Underwater swimming was a competition held at the second modern Olympic Games in Paris in 1900.

Points were awarded as follows:

• Two points for every metre swum under water
• One point for every second the swimmer stayed below the surface

The competition was held over a maximum of 60 m.

The winner was Charles DeVandeville (France), who swam 60 meters in a time of 1 minute and 8.4 seconds (score: 188.4 pts). In second and third places were André Six (France) and Peter Lykkeberg (Denmark).

This was the first and only time underwater swimming was held at the Olympic Games: The sport was not featured at subsequent games because of lack of spectator appeal.

1900 Summer Olympics events