Swimming at the World Aquatics Championships

The aquatics discipline of swimming has been the core component of every edition of the FINA World Aquatics Championships since its introduction in 1973. In 1991, open water swimming events were introduced to the program of the World Championships.

The number of events competed for at each edition of the championships has grown steadily through the years. In 1973, 29 events were swum: 15 events for men and 14 events for women. In 2015, the combined number of events for men and women including long course and open water events was 49, a drastic increase compared to the first edition. Historically, 50 different events were competed in 16 editions of the championships.

Long course events have been competed since the inaugural edition of the championships in 1973. The youngest male swimmer to participate in the World Swimming Championships was Ahnt Khaung Htut from Myanmar, who was 12 years old in 2015. He took part at the 100m backstroke and 100m breaststroke events. The youngest female swimmer to participate in the World Swimming Championships was 10-year-old Alzain Tareq from Bahrain in 2015. She participated at the 50m butterfly and 50m freestyle events.

Open water swimming events have been competed since the sixth edition of the championships in 1991. From 2000 to 2010, FINA organized in even years specific championships for open water swimming events, the FINA World Open Water Swimming Championships.

A select number of athletes have won medals at both long course and open water events, including Oussama Mellouli from Tunisia, Hayley Lewis from Australia and Sharon van Rouwendaal from the Netherlands. For a full list of medalists covering all editions of the championships see List of World Aquatics Championships medalists in swimming (men) and List of World Aquatics Championships medalists in swimming (women). For a complete list of medal winners in open water swimming see List of World Aquatics Championships medalists in open water swimming.

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