Competitors for 2019 Marathon Swimming World Series
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Kirill Abrosimov |  RUS |
OWS | 22 November 1991 |
| Arianna Bridi |  ITA |
OWS | 6 November 1995 |
| Ana Marcela Cunha |  BRA |
OWS/SWI | 23 March 1992 |
| Matteo Furlan | ITA |
OWS/SWI | 29 May 1989 |
| Ferry Weertman |  NED |
OWS/SWI | 27 June 1992 |
| Xin Xin |  CHN |
OWS | 6 November 1996 |