Swimmers at the 2019 Pan American Games

Nathan Ghar-jun Adrian (born December 7, 1988) is an American competitive swimmer and five-time Olympic gold medalist who formerly held the American record in the long course 50-meter freestyle event.

Giovanna Tomanik Diamante (born June 26, 1997 in São Paulo) is a Brazilian swimmer.

Viviane Eichelberger Jungblut (born June 29, 1996, in Porto Alegre) is a Brazilian swimmer.

Delfina Pignatiello (born 19 April 2000) is an Argentine swimmer. She participated in the 2017 FINA World Junior Swimming Championships where she won two gold medals. She won the Olimpia de Oro award to the best Argentine sportsperson in 2017.

Jeserik Andreina Pinto Sequera (born 21 March 1990) is a Venezuelan swimmer. She competed in the women's 50 metre backstroke event at the 2017 World Aquatics Championships.

Macarena Ceballos (born 12 January 1995) is an Argentine swimmer. She competed in the women's 100 metre breaststroke event at the 2017 World Aquatics Championships.

Santiago Grassi (born September 25, 1996) is an Argentine swimmer. He competed at the 2016 Summer Olympics in the men's 100 metre butterfly; his time of 52.56 seconds in the heats did not qualify him for the semifinals. He won the silver medal in the men's 100 metre butterfly event at the 2015 Pan American Games. He has qualified to represent Argentina again at the 2020 Summer Olympics in the men's 100 metre butterfly event.

Allyson Ponson (born 4 December 1995) is an Aruban swimmer. She holds the national record in 50 and 100 metre freestyle and 50 metre backstroke. In 2011, she was named Aruban Athlete of the Year. She placed 45th in the 50 metre freestyle event at the 2016 Summer Olympics.

Isabella Arcila (born 11 March 1994) is a Colombian swimmer. She competed in the women's 50 metre freestyle event at the 2016 Summer Olympics.

Renzo Tjon-A-Joe is a Surinamese swimmer who mainly swims in 50 m and 100 m freestyle events. He competed at the 2016 Summer Olympics and is the fastest swimmer in Surinamese history.