Competitors for 2019 Marathon Swimming World Series
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Leonie Beck |  GER |
OWS/SWI | 27 May 1997 |
| Arianna Bridi |  ITA |
OWS | 6 November 1995 |
| Ana Marcela Cunha |  BRA |
OWS/SWI | 23 March 1992 |
| Sören Meißner | GER |
OWS/SWI | 12 February 1990 |
| Kristóf Rasovszky |  HUN |
OWS/SWI | 27 March 1997 |
| Ferry Weertman |  NED |
OWS/SWI | 27 June 1992 |