Competitors for 2004 South American Aquatics Championships
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Matías Aguilera |  ARG |
SWI | 12 January 1985 |
| Octavio Alesi |  VEN |
SWI | 10 December 1986 |
| Mónica Álvarez |  COL |
SWI | 5 July 1988 |
| Leopoldo Andara | VEN |
SWI | 27 June 1986 |
| Daniela Aponte | VEN |
SWI | |
| Felipe Araújo |  BRA |
SWI | 26 March 1984 |
| Walter Arciprete | ARG |
SWI | 25 May 1979 |
| Yamilé Bahamonde |  ECU |
SWI | 4 June 1987 |
| Georgina Bardach | ARG |
SWI | 18 August 1983 |
| Joaquín Belza | ARG |
SWI | 21 July 1983 |
| Cecilia Biagioli | ARG |
OWS/SWI | 3 January 1985 |
| Bruno Bonfim | BRA |
SWI | 18 May 1979 |
| Gustavo Borges | BRA |
SWI | 2 December 1972 |
| Mariana Brochado | BRA |
SWI | 18 December 1984 |
| Carlos Castro Campos |  CHI |
SWI | 22 June 1983 |
| Rodrigo Castro | BRA |
SWI | 21 December 1978 |
| Lílian Cerroni | BRA |
SWI | 17 November 1984 |
| Laura Crespo | BRA |
SWI | 1981 |
| María del Águila |  PER |
SWI | |
| Flávia Delaroli | BRA |
SWI | 28 December 1983 |
| Vanessa Dueñas | COL |
SWI | 1986 |
| Paola Duguet | COL |
SWI | 1 October 1987 |
| Serrana Fernández |  URU |
SWI | 13 November 1973 |
| Monique Ferreira | BRA |
SWI | 29 June 1980 |
| Sergio Ferreyra | ARG |
SWI | 21 May 1977 |
| Agustín Fiorilli | ARG |
SWI | 8 October 1978 |
| Eduardo Fischer | BRA |
SWI | 25 March 1980 |
| Felipe França | BRA |
SWI | 14 May 1987 |
| Agustina De Giovanni | ARG |
SWI | 16 July 1985 |
| Laura Gómez | COL |
SWI | 1987 |
| Corina Gonçalves | VEN |
SWI | |
| Natalia Grava | BRA |
SWI | 1982 |
| Rebeca Gusmão | BRA |
SWI | 24 August 1984 |
| Flávia Jesús | BRA |
SWI | |
| Grace Johnson | ARG |
SWI | |
| Kaio Márcio | BRA |
SWI | 19 October 1984 |
| Kristel Köbrich | CHI |
OWS/SWI | 9 August 1985 |
| Luiz Lima | BRA |
OWS/SWI | 10 December 1977 |
| Diana López | VEN |
SWI | 12 April 1986 |
| Paulo Machado | BRA |
SWI | 24 July 1978 |
| Salvador Mallat | CHI |
SWI | 6 August 1986 |
| Joanna Maranhão | BRA |
SWI | 29 April 1987 |
| Ximena Mascia | ARG |
SWI/WAP | |
| Alexandre Massura | BRA |
SWI | 19 June 1975 |
| José Meolans | ARG |
SWI | 22 June 1978 |
| Fabíola Molina | BRA |
SWI | 22 May 1975 |
| Ivi Monteiro | BRA |
SWI | 16 November 1984 |
| Manuela Morano | ARG |
SWI | 1988 |
| Ana Muniz | BRA |
SWI | 14 March 1984 |
| Eduardo Otero | ARG |
SWI | 4 February 1980 |
| Francisco Páez | VEN |
SWI | 17 April 1979 |
| Francy Palma | VEN |
SWI | |
| Ramiro Palmar | VEN |
SWI | |
| Thiago Pereira | BRA |
SWI | 26 January 1986 |
| Juan Martín Pereyra | ARG |
SWI | 10 August 1980 |
| Francisco Picasso | URU |
SWI | 19 June 1982 |
| Mariana Pimenta | BRA |
SWI | 19 July 1982 |
| Yanel Pinto | VEN |
OWS/SWI | 20 May 1989 |
| Omar Pinzón | COL |
SWI | 17 June 1989 |
| Nayara Ribeiro | BRA |
SWI | 27 June 1984 |
| María Rodríguez | VEN |
SWI | 19 March 1978 |
| Luis Rojas | VEN |
SWI | 5 July 1979 |
| Rogério Romero | BRA |
SWI | 22 November 1969 |
| Lucas Salatta | BRA |
SWI | 27 April 1987 |
| Javiera Salcedo | ARG |
SWI | 29 November 1977 |
| Luciano Sales | ARG |
OWS/SWI | |
| Julio Santos | ECU |
SWI | 21 November 1976 |
| Max Schnettler | CHI |
SWI | 30 January 1986 |
| Valeria Silva | PER |
SWI | 4 September 1985 |
| Jader Souza | BRA |
SWI | 13 March 1982 |
| Albert Subirats | VEN |
SWI | 25 September 1986 |
| Gabrielle Tirabassi | VEN |
SWI | |
| Fátima Valderrama | PER |
SWI | 29 April 1989 |
| Juan Pablo Valdivieso | PER |
SWI | 27 February 1981 |
| Ximena Vilar | VEN |
SWI | 18 November 1985 |
| María Wong | PER |
SWI | 12 May 1986 |
| María Zabala | ARG |
SWI | |
| Giancarlo Zolezzi | CHI |
SWI | 27 August 1981 |