Competitors for 2004 Swim World Cup
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Therèse Alshammar |  SWE |
SWI | 26 August 1977 |
| Yevgeny Alyoshin |  RUS |
SWI | 4 May 1979 |
| Randall Bal |  USA |
SWI | 14 November 1980 |
| Yelena Bogomazova | RUS |
SWI | 9 February 1982 |
| Jennifer Carroll |  CAN |
SWI | 4 June 1981 |
| Laura Chase |  GBR |
SWI | 1987 |
| Dragoș Coman |  ROU |
SWI | 16 October 1980 |
| Chris Cook |  ENG GBR |
SWI | 5 May 1979 |
| Rebecca Cooke | ENG GBR |
SWI | 24 June 1983 |
| Eric Donnelly | USA |
SWI | 8 June 1980 |
| Gao Chang |  CHN |
SWI | 29 January 1987 |
| James Gibson | ENG GBR |
SWI | 6 February 1980 |
| Brent Hayden | CAN |
SWI | 21 October 1983 |
| Emma Igelström | SWE |
SWI | 6 March 1980 |
| Hanae Ito |  JPN |
SWI | 18 January 1985 |
| Brian Johns | CAN |
SWI | 5 August 1982 |
| Sanja Jovanović |  CRO |
SWI | 15 September 1986 |
| Mirna Jukic |  AUT |
SWI | 9 April 1986 |
| Anna-Karin Kammerling | SWE |
SWI | 19 October 1980 |
| Kosuke Kitajima | JPN |
SWI | 22 September 1982 |
| Stanislava Komarova | RUS |
SWI | 12 June 1986 |
| Kristy Kowal | USA |
SWI | 9 October 1978 |
| Sara Larsson | SWE |
SWI | 15 December 1983 |
| Jason Lezak | USA |
SWI | 12 November 1975 |
| Josefin Lillhage | SWE |
SWI | 15 March 1980 |
| David Maître |  FRA |
SWI | 22 February 1980 |
| Peter Mankoč |  SLO |
SWI | 4 July 1978 |
| Melanie Marshall | ENG GBR |
SWI | 12 January 1982 |
| Takeshi Matsuda | JPN |
SWI | 23 June 1984 |
| Malia Metella | FRA |
SWI | 23 February 1982 |
| Mike Mintenko | CAN |
SWI | 7 November 1975 |
| Martina Moravcová |  TCH SVK |
SWI | 16 January 1976 |
| Tomomi Morita | JPN |
SWI | 22 August 1984 |
| Ed Moses | USA |
SWI | 7 June 1980 |
| Reiko Nakamura | JPN |
SWI | 17 May 1982 |
| Yuko Nakanishi | JPN |
SWI | 24 April 1981 |
| Ryk Neethling |  RSA |
SWI | 17 November 1977 |
| Stefan Nystrand | SWE |
SWI | 20 October 1981 |
| Junko Onishi | JPN |
SWI | 18 October 1974 |
| Pang Jiaying | CHN |
SWI | 6 January 1985 |
| Steve Parry | ENG GBR |
SWI | 2 March 1977 |
| Adam Pine |  AUS |
SWI | 28 February 1976 |
| Camelia Potec | ROU |
SWI | 19 February 1982 |
| Yury Prilukov | RUS |
SWI | 14 June 1984 |
| Andriy Serdinov |  UKR |
SWI | 17 November 1982 |
| Courtney Shealy | USA |
SWI | 12 December 1977 |
| Alison Sheppard | GBR SCO |
SWI | 5 November 1972 |
| Johanna Sjöberg | SWE |
SWI | 8 March 1978 |
| Nikolay Skvortsov | RUS |
SWI | 28 March 1984 |
| Malin Svahnström | SWE |
SWI | 10 June 1980 |
| Petria Thomas | AUS |
SWI | 25 August 1975 |
| Arkady Vyatchanin | RUS |
SWI | 4 April 1984 |
| Wang Wei | CHN |
SWI | 1980 |
| Adam Whitehead | ENG GBR |
SWI | 28 March 1980 |
| Yang Jing | CHN |
SWI | 1987 |
| Zhou Yafei | CHN |
SWI | 17 January 1984 |