Swimming at the 2017 World Aquatics Championships was held from 23 to 30 July 2017 in Budapest, Hungary. It was held in the Danube Arena. The United States was the top winner in the overall championship with 21 gold medals and 46 points in total with China second with 12 gold medals with 30 points in total. In the swimming events also, the United States was first and gained 18 gold medals and scored 38 points.
42 events were held.
All times are local (UTC+2).
<div style="text-align: center;"><small>M = Morning session (starting at 09:30), E = Evening session (starting at 17:30)</small></div>
Host nation
<span style="font-size:95%"> Swimmers who participated in the heats only and received medals.</span>
<span style="font-size:95%"> Swimmers who participated in the heats only and received medals.</span>
<span style="font-size:95%"> Swimmers who participated in the heats only and received medals.</span>
The following world, championship, and area records were broken during the competition.