Age: 24
Hometown: Green Cove Springs, Florida
Events: 50 meter freestyle; 100 meter freestyle; 100 meter butterfly
Prior Olympic Victories: Rio 2016; two gold medals
Hometown: Sugar Land, Texas
Events: 50 meter freestyle
Prior Olympic Victories: Rio 2016; two gold, two silver medals
Age: 29
Hometown: Huntington Beach, California
Events: 100 meter butterfly
Prior Olympic Victories: Rio 2016; one gold medal
Hometown: Bethesda, Maryland
Events: 200 meter freestyle; 400 meter freestyle; 800 meter freestyle; 1,500 meter freestyle
Prior Olympic Victories: London 2012; one gold medal; Rio 2016; 4 gold, one silver medal
Age: 21
Hometown: Clearwater, Florida
Events: 800 meter freestyle; 1,500 meter freestyle
Prior Olympic Victories: Rookie
Age: 15
Hometown: Las Vegas, Nevada
Events: 800 meter freestyle
Age: 25
Hometown: Jacksonville, Florida
Events: 100 meter backstroke; 200 meter backstroke
Prior Olympic Victories: Rio 2016; three gold medals
Age: 19
Hometown: Sarasota, Florida
Events: 400 meter individual medley
Hometown: Richmond, Virginia
Events: 200 meter freestyle
Age: 31
Hometown: Canton, Michigan
Events: 200 meter freestyle; 4x100 freestyle relay
Prior Olympic Victories: Beijing 2008; one bronze medal, London 2012; three gold, one silver, one bronze medal, Rio 2016; one gold, one silver medal
Hometown: McLean, Virginia
Events: 4x200 freestyle relay
Age: 32
Hometown: Fayetteville, New York
Events: 10 kilometer open water swim
Hometown: Carmel, Indiana
Age: 17
Hometown: Seward, Alaska
Events: 100 meter breastroke
Events: 400 meter freestyle
Age: 16
Events: 4x200 meter freestyle relay
Hometown: Ridgefield, Connecticut
Events: 200 meter freestyle; 400 meter freestyle
Age: 22
Hometown: Mobile, Alabama
Events: 400 meter freestyle; 4x200 freestyle relay
Age: 23
Events: 4x100 meter freestyle relay
Hometown: Louisville, Kentucky
Hometown: Owasso, Oklahoma
Age: 20
Events: 1,500 meter freestyle
Hometown: Encinitas, California
Events: 50 meter freestyle; 100 meter breastroke; 200 meter individual medley
Hometown: Grosse Point, Michigan