The United States competed at the 2023 World Aquatics Championships in Fukuoka, Japan from 14 to 30 July. The United States ranked first among all countries in medals (44) and ranked third in gold medals (7).
The following is the number of competitors who participated at the Championships per discipline.
On 24 May 2023, 18 athletes were named to the World Championships roster.
Seven athletes were named to the World Championships roster.
On 23 June 2023, five athletes were named to the World Championships roster.
On 1 July 2023, 48 athletes were named to the World Championships roster. The United States ranked first among all countries in swimming medals (38) and ranked second in swimming gold medals (7). Kate Douglass led the American athletes in medals, with two golds, three silvers, and one bronze.