The United States competed at the 2025 World Aquatics Championships in Singapore from July 11 to August 3, 2025.
Athletes by discipline
The following is the number of competitors who will participate at the Championships per discipline. ==Medalists==
Artistic swimming
Nine athletes were named to the World Championships roster. ;Women ;Mixed ==Diving==
Diving
20 athletes were named to the World Championships roster. ;Men ;Women ;Mixed ==High diving==
High diving
Six athletes were named to the World Championships roster. ;Men ;Women ==Open water swimming==
Open water swimming
Seven athletes were named to the World Championships roster. ;Men ;Women ;Mixed ==Swimming==
Swimming
On June 8, 2025, 47 athletes were named to the World Championships roster. ;Men ;Women ;Mixed ==Water polo==
Water polo
;Summary Men's tournament ;Team roster ;Group play ;Quarterfinals ;5th–8th place semifinal ;7th place game Women's tournament ;Team roster ;Group play ;Quarterfinals ;Semifinals ;Third place game ==References==