Competitors for 2004 Swim World Cup
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Yevgeny Alyoshin |  RUS |
SWI | 4 May 1979 |
| Randall Bal |  USA |
SWI | 14 November 1980 |
| Irina Bespalova | RUS |
SWI | 31 May 1981 |
| Yevgeny Bezruchenko | RUS |
OWS/SWI | 26 October 1977 |
| Yelena Bogomazova | RUS |
SWI | 9 February 1982 |
| Mariya Bulakhova | RUS |
OWS/SWI | 18 November 1988 |
| Eric Donnelly | USA |
SWI | 8 June 1980 |
| Sophie Edington |  AUS |
SWI | 12 December 1984 |
| Grigory Falko | RUS |
SWI | 9 May 1987 |
| Sergey Gerasimov | RUS |
SWI | 9 January 1980 |
| Marieke Guehrer | AUS |
SWI | 9 February 1986 |
| Heiko Hell |  GER |
SWI | 5 May 1980 |
| Anastasiya Ivanenko | RUS |
SWI | 24 February 1989 |
| Sanja Jovanović |  CRO |
SWI | 15 September 1986 |
| Andrey Kapralov | RUS |
SWI | 7 October 1980 |
| Svetlana Karpeyeva | RUS |
SWI | 16 October 1985 |
| Bartosz Kizierowski |  POL |
SWI | 20 February 1977 |
| Yana Klochkova |  UKR |
SWI | 7 August 1982 |
| Stanislava Komarova | RUS |
SWI | 12 June 1986 |
| Yekaterina Kormacheva | RUS |
SWI | 17 July 1982 |
| Aleksey Kovrigin | RUS |
SWI | 7 July 1981 |
| Kristy Kowal | USA |
SWI | 9 October 1978 |
| Jens Kuhlmann | GER |
SWI | 1979 |
| Jason Lezak | USA |
SWI | 12 November 1975 |
| Josefin Lillhage |  SWE |
SWI | 15 March 1980 |
| Liu Weijia |  CHN |
SWI | 15 February 1989 |
| Nataliya Lovtsova | RUS |
SWI | 14 April 1988 |
| Igor Marchenko | RUS |
SWI | 26 November 1975 |
| Yana Martynova | RUS |
SWI | 3 February 1988 |
| Melissa Morgan | AUS |
SWI | 1 January 1985 |
| Ed Moses | USA |
SWI | 7 June 1980 |
| Kurt Muller |  RSA |
SWI | 1984 |
| Darya Parshina | RUS |
SWI | 9 January 1988 |
| Anatoly Polyakov | RUS |
SWI | 10 May 1980 |
| Alena Popchanka |  BLR FRA |
SWI | 28 July 1979 |
| Yury Prilukov | RUS |
SWI | 14 June 1984 |
| Andriy Serdinov | UKR |
SWI | 17 November 1982 |
| Maryia Shcherba | BLR |
SWI | 14 April 1985 |
| Courtney Shealy | USA |
SWI | 12 December 1977 |
| Dzianis Silkou | BLR |
SWI | 4 January 1982 |
| Johanna Sjöberg | SWE |
SWI | 8 March 1978 |
| Nikolay Skvortsov | RUS |
SWI | 28 March 1984 |
| Roman Sludnov | RUS |
SWI | 24 February 1980 |
| Jader Souza |  BRA |
SWI | 13 March 1982 |
| Regina Sych | RUS |
SWI | 21 July 1987 |
| Aleksandr Tarabrin |  KAZ RUS |
SWI | 24 April 1985 |
| Yana Tolkacheva | RUS |
SWI | 1987 |
| Jane Trepp |  EST |
SWI | 13 March 1988 |
| Iryna Tsimafeyeva | BLR |
SWI | 1987 |
| Yury Ufimtsev | RUS |
SWI | 1983 |
| Tero Välimaa |  FIN |
SWI | 10 August 1978 |
| Liz van Welie |  NZL |
SWI | 17 November 1979 |
| Yekaterina Vinogradova | RUS |
SWI | 8 October 1980 |
| Arkady Vyatchanin | RUS |
SWI | 4 April 1984 |
| Yuriy Yehoshyn | UKR |
SWI | 2 June 1985 |
| Yu Seung-Hyeon |  KOR |
SWI | 28 June 1983 |
| Aleksey Zatsepin | RUS |
SWI | 5 May 1984 |