Brazil's Team, as announced by CBDA here.
Men (20)
Bruno Fratus (50m Freestyle)
Ítalo Duarte (50m Freestyle)
Marcelo Chierighini (100m Freestyle / 4x100m Freestyle Relay / 4x100m Medley Relay*)
Nicolas Oliveira (100m Freestyle / 200m Freestyle / 4x100m Freestyle Relay)
João de Lucca (200m Freestyle / 4x100m Freestyle Relay)
Matheus Santana (4x100m Freestyle)
Luiz Altamir Melo (400m Freestyle)
Miguel Valente (1500m Freestyle)
Brandonn Almeida (1500m Freestyle / 400m Individual Medley)
João Gomes Jr (100m Breaststroke / 4x100m Medley Relay*)
Felipe França (100m Breaststroke)
Tales Cerdeira (200m Breaststroke)
Thiago Simon (200m Breaststroke)
Guilherme Guido (100m Backstroke / 4x100m Medley Relay)
Leonardo de Deus (200m Backstroke / 200m Butterfly)
Kaio Márcio Almeida (200m Butterfly)
Henrique Martins (100m Butterfly / 4x100m Medley Relay*)
Marcos Macedo (100m Butterfly)
Henrique Rodrigues (200m Individual Medley)
Thiago Pereira (200m Individual Medley)
Women (9)
Etiene Medeiros (50m Freestyle / 100m Freestyle / 100m Backstroke / 4x100m Freestyle Relay)
Graciele Herrmann (50m Freestyle)
Larissa Oliveira (100m Freestyle / 200m Freestyle / 4x100m Freestyle Relay / 4x200m Freestyle Relay)
Manuella Lyrio (200m Freestyle / 4x100m Freestyle Relay / 4x200m Freestyle Relay)
Jessica Bruin (4x200m Freestyle Relay)
Gabrielle Roncatto (4x200m Freestyle Relay)
Daiene Dias (100m Butterfly)
Daynara de Paula (100m Butterfly / 4x100m Freestyle Relay)
Joanna Maranhão (200m Individual Medley / 400m Individual Medley)
This does not count the 3 athletes qualified for Open Water. If we confirm our quotas for Men's 4x200m Freestyle Relay and Women's 4x100m Medley Relay, the number of athletes might rise. Athletes marked with "*" are not 100% guaranteed in the Medley Relay, since 2 athletes have qualified for each individual event and the selection for the Relay will be determined by their performance on those.