Competitors for 1998 Swim World Cup
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Roger Ashcroft |  GBR |
SWI | 1973 |
| Brigitte Becue |  BEL |
SWI | 18 September 1972 |
| Francesca Bissoli |  ITA |
SWI | 1980 |
| Svitlana Bondarenko |  CIS URS UKR |
SWI | 12 August 1971 |
| Carrie Burgoyne |  CAN |
SWI | 12 December 1981 |
| Daniel Carlsson |  SWE |
SWI | 14 November 1976 |
| Jacob Carstensen |  DEN |
SWI | 10 September 1978 |
| Stephen Clarke | CAN |
SWI | 21 July 1973 |
| Edward Clement | GBR |
SWI | 1979 |
| Sarah Collings |  ENG GBR |
SWI | 1978 |
| Joanne Deakins | ENG GBR |
SWI | 20 November 1972 |
| Kaori Dekura |  JPN |
SWI | 1980 |
| Helen Denman |  AUS |
SWI | 4 September 1976 |
| Ricardo Dornelas |  BRA |
SWI | 1977 |
| Mike Fibbens | ENG GBR |
SWI | 31 May 1968 |
| Darius Grigalionis |  LTU |
SWI | 21 April 1977 |
| Jere Hård |  FIN |
SWI | 7 December 1978 |
| James Hickman | ENG GBR |
SWI | 2 February 1976 |
| Stacey Houldsworth | GBR |
SWI | 1981 |
| Claire Huddart | ENG GBR |
SWI | 22 December 1971 |
| Chihiro Ikeda | JPN |
SWI | 1980 |
| Patrik Isaksson | SWE |
SWI | 5 April 1973 |
| Junko Isoda | JPN |
SWI | 11 March 1981 |
| Mette Jacobsen | DEN |
SWI | 24 March 1973 |
| Michael Jacobsson | SWE |
SWI | 1979 |
| Louise Jöhncke | SWE |
SWI | 31 July 1976 |
| Mark Johnston | CAN |
SWI | 31 August 1979 |
| Tomislav Karlo |  CRO |
SWI | 21 December 1970 |
| Tom Karlsen |  NOR |
SWI | 1974 |
| Jaime King | ENG GBR |
SWI | 18 December 1976 |
| Tatsuya Kinugasa | JPN |
SWI | 8 October 1974 |
| Magdalena Latos |  POL |
SWI | |
| Ryan Laurin | CAN |
SWI | |
| Richard Maden | ENG GBR |
SWI | 21 September 1972 |
| Gavin Meadows | ENG GBR |
SWI | 8 September 1977 |
| Katrin Meißner |  GDR GER |
SWI | 17 January 1973 |
| Miloš Milošević | CRO YUG |
SWI | 10 May 1972 |
| Ryan Mitchell | AUS |
SWI | 24 April 1977 |
| Lori Munz | AUS |
SWI | 7 February 1979 |
| Curtis Myden | CAN |
SWI | 31 December 1973 |
| Susie O'Neill | AUS |
SWI | 2 August 1973 |
| Simone Osygus | GER |
SWI | 30 September 1968 |
| Margie Pedder | ENG GBR |
SWI | 27 June 1980 |
| Karen Pickering | ENG GBR |
SWI | 19 December 1971 |
| Nicholas Poole | GBR |
SWI | |
| Phil Rogers | AUS |
SWI | 24 April 1971 |
| Sue Rolph | ENG GBR |
SWI | 15 May 1978 |
| Rogério Romero | BRA |
SWI | 22 November 1969 |
| Adam Ruckwood | ENG GBR |
SWI | 13 September 1974 |
| Yoshiko Saito | JPN |
SWI | |
| Janne Schäfer | GER |
SWI | 28 May 1981 |
| Katy Sexton | ENG GBR |
SWI | 21 June 1982 |
| Johanna Sjöberg | SWE |
SWI | 8 March 1978 |
| Sophia Skou | DEN |
SWI | 1 December 1975 |
| Graeme Smith | GBR SCO |
SWI | 31 March 1976 |
| Petria Thomas | AUS |
SWI | 25 August 1975 |
| Kirsty Thomson | GBR |
SWI | 1980 |
| Sandra Völker | GER |
SWI | 1 April 1974 |
| Johan Wallberg | SWE |
SWI | 18 March 1977 |
| Adam Whitehead | ENG GBR |
SWI | 28 March 1980 |
| Ian Wilson | ENG GBR |
SWI | 19 December 1970 |
| Eri Yamanoi | JPN |
SWI | 12 September 1978 |