United States at the 2015 World Aquatics Championships
United States competed at the 2015 World Aquatics Championships in Kazan, Russia from 24 July to 9 August 2015.
Medalists
Diving
U.S. divers qualified for the individual spots and the synchronized teams at the World Championships.;Men
;Women
;Mixed
High diving
A maximum of six high divers have been selected to compete for the U.S. team at the World Championships.| Athlete | Event | Points | Rank |
| David Colturi | Men's high diving | 586.70 | 4 |
| Andy Jones | Men's high diving | 579.15 | 5 |
| Steve Lobue | Men's high diving | 570.45 | 7 |
| Cesilie Carlton | Women's high diving | 237.35 | |
| Ginger Huber | Women's high diving | 213.70 | 6 |
| Rachelle Simpson | Women's high diving | 258.70 | |
| Tara Hyer Tira | Women's high diving | 178.75 | 9 |
Open water swimming
Eight U.S. open water swimmers have been qualified based on their performances at the USA Swimming Open Water National Championships. The official roster featured Olympic silver medalist Haley Anderson for the women's events, and 2012 Olympian Alex Meyer for the men's events.;Men
| Athlete | Event | Time | Rank |
| David Heron | 5 km | 55:20.7 | 6 |
| David Heron | 25 km | 5:00:11.5 | 10 |
| Alex Meyer | 5 km | 55:25.3 | 11 |
| Alex Meyer | 25 km | 4:53:15.1 | |
| Sean Ryan | 10 km | 1:50:03.3 | 4 |
| Jordan Wilimovsky | 10 km | 1:49:48.2 |
;Women
| Athlete | Event | Time | Rank |
| Haley Anderson | 5 km | 58:48.4 | |
| Haley Anderson | 10 km | 1:58:35.9 | 9 |
| Emily Brunemann | 25 km | 5:19:51.2 | 8 |
| Rebecca Mann | 10 km | 1:58:51.9 | 14 |
| Ashley Twichell | 5 km | 59:10.0 | 6 |
| Ashley Twichell | 25 km | 5:20:20.8 | 9 |
;Mixed
| Athlete | Event | Time | Rank |
| Sean Ryan Ashley Twichell Jordan Wilimovsky | Team | 55:50.6 | 5 |
Swimming
U.S. swimmers earned qualifying standards in the following events :The U.S. team consists of 47 swimmers. Twenty-eight of these swimmers have competed at the previous World Championships in Barcelona including undisputed superstars Ryan Lochte, Missy Franklin, and Katie Ledecky, and notable Olympic champions Nathan Adrian, Tyler Clary, Anthony Ervin, and Matt Grevers.
;Men
;Women
;Mixed
Synchronized swimming
Fourteen U.S. synchronized swimmers have been selected to compete in each of the following events at the World Championships.;Women
;Mixed
Water polo
Men's tournament
;Team roster- Merrill Moses
- Nikola Vavić
- Alex Obert
- Jackson Kimbell
- Alex Roelse
- Luca Cupido
- Josh Samuels
- Tony Azevedo
- Alex Bowen
- Bret Bonanni
- Jesse Smith
- John Mann
- McQuin Baron
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;Playoffs
;Quarterfinals
;5th–8th place semifinals
;Seventh place game
Women's tournament
;Team roster- Samantha Hill
- Madeline Musselmann
- Melissa Seidemann
- Rachel Fattal
- Alys Williams
- Margaret Steffens
- Courtney Mathewson
- Kiley Neushul
- Ashley Grossman
- Kaleigh Gilchrist
- Makenzie Fischer
- Kami Craig
- Ashleigh Johnson
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;Playoffs
;Quarterfinals
;Semifinals
;Final