UPDATED: April 7, 2020

Both the men's and women's United States national water polo teams qualified for the Tokyo Olympics in the summer of 2019. The woman's team did so by winning the 2019 FINA World League, and the men by triumphing at the 2019 Pan American Games. Both rosters will have to be trimmed to a final 13-player squad for the Olympics. Currently, though, the 2021 national team rosters are:

Men: Tyler Abramson, Alex Bowen, Luca Cupido, Hannes Daube, Jake Ehrhardt, Matt Farmer, Thomas Gruwell, Ben Hallock, Drew Holland, Johnny Hooper, Max Irving, Kacper Langiewicz, Ash Molthen, Alex Obert, Chancellor Ramirez, Jesse Smith, Ben Stevenson, Jack Turner, Marko Vavic, Bennett Williams, Alex Wolf, Dylan Woodhead

Women: Rachel Fattal. Aria Fischer, Makenzie Fischer, Brigitta Games, Kaleigh Gilchrist, Stephania Haralabidis, Paige Hauschild, Abbi Hill, Ashleigh Johnson, Amanda Longan, Maddie Musselman, Jamie Neushul, Ryann Neushul. Tara Prentice, Jordan Raney, Jewel Roemer, Melissa Seidemann, Maggie Steffens, Gaby Stone, Alys Williams

Other Qualified Nations

Men's Tournament: Australia, Croatia, Greece, Hungary, Italy, Japan, Kazakhstan, Montenegro, Serbia, South Africa, Spain

Women's Tournament: Australia, Canada, China, Hungary, Japan, Netherlands, Russian athletes (as ROC), South Africa, Spain