| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Sayaka Akase | SWI | 25 August 1994 | |
| Alia Atkinson | SWI | 11 December 1988 | |
| Elizabeth Beisel | SWI | 18 August 1992 | |
| Mireia Belmonte | OWS/SWI | 10 November 1990 | |
| George Bovell | SWI | 18 July 1983 | |
| Myles Brown | SWI | 21 May 1992 | |
| Georgia Davies | SWI | 11 October 1990 | |
| Steffen Deibler | SWI | 10 July 1987 | |
| Inge Dekker | SWI | 18 August 1985 | |
| Christian Diener | SWI | 3 June 1993 | |
| Katie Drabot | SWI | 2 September 1997 | |
| Sergey Fesikov | SWI | 21 January 1989 | |
| Sally Foster | SWI | 13 April 1985 | |
| Thomas Fraser-Holmes | SWI | 9 October 1991 | |
| Takuro Fujii | SWI | 21 April 1985 | |
| Hiromasa Fujimori | SWI | 7 August 1991 | |
| Eugene Godsoe | SWI | 20 January 1988 | |
| Marieke Guehrer | SWI | 9 February 1986 | |
| James Guy | SWI | 26 November 1995 | |
| Dániel Gyurta | SWI | 4 May 1989 | |
| Gergely Gyurta | OWS/SWI | 12 September 1991 | |
| Kosuke Hagino | SWI | 15 August 1994 | |
| Fran Halsall | SWI | 12 April 1990 | |
| Franziska Hentke | SWI | 4 June 1989 | |
| Ayatsugu Hirai | SWI | 20 May 1993 | |
| Rino Hosoda | SWI | 23 June 1995 | |
| Katinka Hosszú | SWI | 3 May 1989 | |
| Chihiro Igarashi | SWI | 24 May 1995 | |
| Runa Imai | SWI | 15 August 2000 | |
| Ryosuke Irie | SWI | 24 January 1990 | |
| Kenta Ito | SWI | 26 October 1990 | |
| Rie Kaneto | SWI | 8 September 1988 | |
| Takeshi Kawamoto | SWI | 19 February 1995 | |
| Lilly King | SWI | 10 February 1997 | |
| Ema Kobayashi | SWI | 26 November 1994 | |
| Yasuhiro Koseki | SWI | 14 March 1992 | |
| Mitch Larkin | SWI | 9 July 1993 | |
| Chad le Clos | SWI | 12 April 1992 | |
| Flee Lee | SWI | 19 May 1992 | |
| Caitlin Leverenz | SWI | 26 February 1991 | |
| Yayoi Matsumoto | SWI | 8 March 1990 | |
| Emma McKeon | SWI | 24 May 1994 | |
| Etiene Medeiros | SWI | 24 May 1991 | |
| Katie Meili | SWI | 16 April 1991 | |
| Rūta Meilutytė | SWI | 19 March 1997 | |
| Yasuko Miyamoto | SWI | 3 September 1994 | |
| Yusuke Miyoshi | SWI | 1996 | |
| Katsumi Nakamura | SWI | 21 February 1994 | |
| Ryota Nomura | SWI | 26 May 1988 | |
| Siobhan-Marie O'Connor | SWI | 29 November 1995 | |
| Yui Ohashi | SWI | 18 October 1995 | |
| Miguel Ortiz-Cañavate | SWI | 19 February 1991 | |
| Masato Sakai | SWI | 6 June 1995 | |
| Shiho Sakai | SWI | 1 December 1990 | |
| Roland Schoeman | SWI | 3 July 1980 | |
| Daiya Seto | SWI | 24 May 1994 | |
| Shinri Shioura | SWI | 26 November 1991 | |
| Yuki Shirai | SWI | 17 October 1989 | |
| Ryo Takayasu | SWI | 19 July 1981 | |
| Shogo Takeda | SWI | 1 January 1995 | |
| Syoko Tanabe | SWI | 1 May 1993 | |
| Miki Uchida | SWI | 21 February 1995 | |
| Ippei Watanabe | SWI | 18 March 1997 | |
| Madi Wilson | SWI | 31 May 1994 | |
| Akihiro Yamaguchi | SWI | 11 September 1994 |