Competitors for 2003 Swim World Cup
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Georgina Bardach |  ARG |
SWI | 18 August 1983 |
| Amanda Beard |  USA |
SWI | 29 October 1981 |
| Bruno Bonfim |  BRA |
SWI | 18 May 1979 |
| Gustavo Borges | BRA |
SWI | 2 December 1972 |
| Renata Burgos | BRA |
SWI | 3 January 1982 |
| Andrew Burns |  AUS |
SWI | |
| Rodrigo Castro | BRA |
SWI | 21 December 1978 |
| Chen Hua |  CHN |
SWI | 20 October 1982 |
| Haley Cope | USA |
SWI | 11 April 1979 |
| Raphael de Thuin | BRA |
SWI | 1975 |
| Flávia Delaroli | BRA |
SWI | 28 December 1983 |
| Steffen Driesen |  GER |
SWI | 30 November 1981 |
| Hugues Duboscq |  FRA |
SWI | 29 August 1981 |
| Rodrigo Ferreira | BRA |
SWI | |
| Eduardo Fischer | BRA |
SWI | 25 March 1980 |
| Chantal Groot |  NED |
SWI | 19 October 1982 |
| Martin Gustavsson |  SWE |
SWI | 5 November 1980 |
| Brooke Hanson | AUS |
SWI | 18 March 1978 |
| Pam Hanson | USA |
SWI | 1979 |
| Toni Helbig | GER |
SWI | 1982 |
| Stefan Herbst | GER |
SWI | 17 May 1978 |
| Pieter van den Hoogenband | NED |
SWI | 14 March 1978 |
| Mirna Jukic |  AUT |
SWI | 9 April 1986 |
| Jun Hao | CHN |
SWI | |
| Kaio Márcio | BRA |
SWI | 19 October 1984 |
| Joris Keizer | NED |
SWI | 26 January 1979 |
| Tamás Kerékjártó |  HUN |
SWI | 9 July 1979 |
| Bartosz Kizierowski |  POL |
SWI | 20 February 1977 |
| Yana Klochkova |  UKR |
SWI | 7 August 1982 |
| Rachel Komisarz | USA |
SWI | 5 December 1976 |
| Caio Lobo | BRA |
SWI | 1983 |
| Mandy Loots |  RSA |
SWI | 3 August 1978 |
| Adam Lucas | AUS |
SWI | 27 October 1983 |
| Joanna Maranhão | BRA |
SWI | 29 April 1987 |
| Igor Marchenko |  RUS |
SWI | 26 November 1975 |
| Alexandre Massura | BRA |
SWI | 19 June 1975 |
| José Meolans | ARG |
SWI | 22 June 1978 |
| Ryk Neethling | RSA |
SWI | 17 November 1977 |
| Armando Negreiros | BRA |
SWI | 10 September 1985 |
| Pang Jiaying | CHN |
SWI | 6 January 1985 |
| Troy Prinsloo | RSA |
OWS/SWI | 16 November 1985 |
| Brenton Rickard | AUS |
SWI | 19 October 1983 |
| Ashley Roby | USA |
SWI | 1980 |
| Rogério Romero | BRA |
SWI | 22 November 1969 |
| Gabrielle Rose | BRA USA |
SWI | 1 November 1977 |
| Xuxa Scherer | BRA |
SWI | 6 October 1974 |
| Staciana Stitts | USA |
SWI | 12 September 1981 |
| Marcelo Tomazini | BRA |
SWI | 18 December 1978 |
| Scott Tucker | USA |
SWI | 18 February 1976 |
| Theo Verster | RSA |
SWI | 14 January 1975 |
| Charlene Wittstock | RSA |
SWI | 25 January 1978 |
| Wu Peng | CHN |
SWI | 16 May 1987 |
| Nina Zhivanevskaya |  CIS RUS URS ESP |
SWI | 24 June 1977 |
| Zhou Yafei | CHN |
SWI | 17 January 1984 |
| Klaas-Erik Zwering | NED |
SWI | 19 May 1981 |