| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Alia Atkinson | SWI | 11 December 1988 | |
| Myles Brown | SWI | 21 May 1992 | |
| Chan Kin Lok | SWI | 7 March 1994 | |
| Cheng Haihua | SWI | 2 January 1997 | |
| Kent Cheung | SWI | 24 November 1992 | |
| Jordan Coelho | SWI | 2 April 1992 | |
| Camille Dauba | SWI | 10 January 1997 | |
| William Debourges | SWI | 29 April 1991 | |
| Stanislav Donets | SWI | 7 July 1983 | |
| Brittany Elmslie | SWI | 19 June 1994 | |
| Fang Yi | SWI | 14 February 1992 | |
| Camille Gheorghiu | SWI | 30 January 1996 | |
| Madeline Groves | SWI | 25 May 1995 | |
| James Guy | SWI | 26 November 1995 | |
| Gergely Gyurta | OWS/SWI | 12 September 1991 | |
| Philip Heintz | SWI | 21 February 1991 | |
| Katinka Hosszú | SWI | 3 May 1989 | |
| Hou Mingda | SWI | 10 January 1994 | |
| Robert Hurley | SWI | 26 September 1988 | |
| Zsu Jakabos | SWI | 3 April 1989 | |
| Jiang Tiansheng | OWS/SWI | 11 March 1992 | |
| Rie Kaneto | SWI | 8 September 1988 | |
| Takeshi Kawamoto | SWI | 19 February 1995 | |
| Marco Koch | SWI | 25 January 1990 | |
| Breeja Larson | SWI | 16 April 1992 | |
| Claudia Lau | SWI | 11 November 1992 | |
| Chad le Clos | SWI | 12 April 1992 | |
| Li Xiang | SWI | 2 July 1993 | |
| Felipe Lima | MOP/SWI | 5 April 1985 | |
| Nataliya Lovtsova | SWI | 14 April 1988 | |
| Katie Meili | SWI | 16 April 1991 | |
| Vladimir Morozov | SWI | 16 June 1992 | |
| Katsumi Nakamura | SWI | 21 February 1994 | |
| Derick Ng | SWI | 18 May 1994 | |
| Miguel Ortiz-Cañavate | SWI | 19 February 1991 | |
| Jeanette Ottesen Gray | SWI | 30 December 1987 | |
| Omar Pinzón | SWI | 17 June 1989 | |
| Josh Prenot | SWI | 28 July 1993 | |
| Ben Proud | SWI | 21 September 1994 | |
| Paval Sankovich | SWI | 29 June 1990 | |
| Daiya Seto | SWI | 24 May 1994 | |
| Tessa Wallace | SWI | 9 September 1993 | |
| Yang Chang | SWI | 16 September 2001 | |
| Yuliya Yefimova | SWI | 3 April 1992 | |
| Poul Zellmann | SWI | 2 September 1995 | |
| Daryna Zevina | SWI | 1 September 1994 | |
| Zhang Jiaqi | SWI | 14 September 1995 | |
| Giulio Zorzi | SWI | 3 January 1989 |