Competitors for 2004 Swim World Cup
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Yevgeny Alyoshin |  RUS |
SWI | 4 May 1979 |
| Bruno Bonfim |  BRA |
SWI | 18 May 1979 |
| Rodrigo Castro | BRA |
SWI | 21 December 1978 |
| Cho A-Ra |  KOR |
SWI | 1987 |
| Cho Sung-Min | KOR |
SWI | |
| Kate Corkran |  AUS |
SWI | 1983 |
| Michelle DeFreese |  USA |
SWI | |
| Steffen Driesen |  GER |
SWI | 30 November 1981 |
| Sally Foster | AUS |
SWI | 13 April 1985 |
| Gwon Yu-Ri | KOR |
SWI | 30 July 1989 |
| Han Guk-In | KOR |
SWI | 1989 |
| Han Gyu-Cheol | KOR |
SWI | 24 December 1981 |
| Stefan Herbst | GER |
SWI | 17 May 1978 |
| Hwang In-Gyu | KOR |
SWI | |
| Jeong Du-Hui | KOR |
SWI | 4 December 1984 |
| Mirna Jukic |  AUT |
SWI | 9 April 1986 |
| Kim Hyeon-Ju | KOR |
SWI | 2 January 1986 |
| Yana Klochkova |  UKR |
SWI | 7 August 1982 |
| Miha Koren |  SLO |
SWI | 24 September 1982 |
| Gordan Kožulj |  CRO |
SWI | 28 November 1976 |
| Tammy Laubscher |  RSA |
SWI | 1984 |
| Lee Chung-Hui | KOR |
SWI | 25 April 1981 |
| Lee Da-Hye | KOR |
SWI | 5 April 1987 |
| Lee Ji-Yeong | KOR |
SWI | 10 July 1989 |
| Lee Nam-Eun | KOR |
SWI | 25 March 1989 |
| Liu Xiaoyu |  CHN |
SWI | 25 June 1988 |
| Peter Mankoč | SLO |
SWI | 4 July 1978 |
| Joanna Maranhão | BRA |
SWI | 29 April 1987 |
| Igor Marchenko | RUS |
SWI | 26 November 1975 |
| Katrin Meißner |  GDR GER |
SWI | 17 January 1973 |
| Danni Miatke | AUS |
SWI | 29 November 1987 |
| Justin Mortimer | USA |
SWI | 1982 |
| Ravil Nachayev |  UZB |
SWI | 17 June 1974 |
| Mai Nakamura |  JPN |
SWI | 16 July 1979 |
| Joakim Nielsen |  SWE |
SWI | 1984 |
| Silke Nowotzin | GER |
SWI | 12 April 1985 |
| Kellan O'Connor | USA |
SWI | |
| O Min-Gyu | KOR |
SWI | |
| Taishi Okude | JPN |
SWI | 23 December 1983 |
| Park Gyeong-Hwa | KOR |
SWI | 29 August 1984 |
| Park Na-Ri | KOR |
SWI | 3 March 1988 |
| Denis Pimankov | RUS |
SWI | 4 February 1975 |
| Ryu Yun-Ji | KOR |
SWI | 22 December 1985 |
| Roman Sludnov | RUS |
SWI | 24 February 1980 |
| Yasutake Takamatsu | JPN |
SWI | 30 July 1982 |
| Meagan Walker | AUS |
SWI | 1984 |
| Yu Seung-Hyeon | KOR |
SWI | 28 June 1983 |
| Robert Zaabadick | USA |
SWI | 1980 |
| Zhang Yan | CHN |
SWI | 13 February 1985 |
| Zheng Jing | CHN |
OWS/SWI | 6 January 1987 |