| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Bartłomiej Adamus | WLT | 12 May 2000 | |
| Nurgissa Adiletuly | WLT | 9 October 2000 | |
| Windy Cantika Aisah | WLT | 11 June 2002 | |
| Darya Akhmerova | WLT | 14 April 1999 | |
| Ahmed Ali | WLT | 10 January 1999 | |
| Berfin Altun | WLT | 1 November 1999 | |
| Kanah Andrews-Nahu | WLT | 18 January 2001 | |
| Artyom Antropov | WLT | 23 January 2000 | |
| Andrei Arlionak | WLT | 17 January 1999 | |
| Karen Avagyan | WLT | 12 May 1999 | |
| Amir Azizi | WLT | 9 January 1990 | |
| Artur Babayan | WLT | 9 July 2002 | |
| Bae Moon-Su | WLT | 7 March 1999 | |
| Ashamarie Benitez Rivera | WLT | 2 June 2000 | |
| Peyton Brown | WLT | 19 March 2001 | |
| Ayşegül Çakın | WLT | 24 June 1999 | |
| Irakli Chkheidze | WLT | 5 January 1999 | |
| CJ Cummings | WLT | 6 June 2000 | |
| Arpine Dalalyan | WLT | 18 February 1999 | |
| Ali Davoudi | WLT | 22 March 1999 | |
| Akbar Djuraev | WLT | 8 October 1999 | |
| Ayşe Doğan | WLT | 12 February 2000 | |
| Doğan Dönen | WLT | 10 December 2002 | |
| Paul Dumitraşcu | WLT | 31 January 2000 | |
| Adkhamjon Ergashev | WLT | 12 March 1999 | |
| Muhammad Faathir | WLT | 21 May 2003 | |
| Tatyana Fedichkina | WLT | 30 April 1999 | |
| Gan Hongyan | WLT | 27 January 2001 | |
| Zulfat Garayev | WLT | 12 January 2000 | |
| Yevgeniya Guseva | WLT | 13 August 2001 | |
| Oleh Hanzenko | WLT | 10 December 1999 | |
| Mohammad Hosseini | WLT | 26 April 2000 | |
| Hristo Hristov | WLT | 27 April 2001 | |
| Hwang San-Gun | WLT | 10 September 2000 | |
| Giulia Imperio | WLT | 7 December 2001 | |
| Jang Hyeon-Ju | WLT | 26 November 1999 | |
| Khổng Mỹ Phượng | WLT | 5 July 1999 | |
| Kamila Konotop | WLT | 23 March 2001 | |
| Kaito Kubo | WLT | 24 January 1999 | |
| Karina Kuzganbayeva | WLT | 13 November 2000 | |
| Nicole Lagos | WLT | 11 April 2003 | |
| Varazdat Lalayan | WLT | 1 May 1999 | |
| Lee Seon-Mi | WLT | 1 August 2000 | |
| Nuray Levent | WLT | 8 May 2000 | |
| Liao Guifang | WLT | 5 October 2001 | |
| Lin Zhi-Ting | WLT | 27 June 1999 | |
| Luo Xiaomin | WLT | 14 November 1999 | |
| Rania Mahmoud | WLT | 10 September 2001 | |
| Archil Malakmadze | WLT | 30 April 2001 | |
| Sergio Massidda | WLT | 26 January 2002 | |
| Maksat Meredow | WLT | 23 June 2000 | |
| Dilara Narin | WLT | 17 March 2002 | |
| Kristina Novitskaya | WLT | 22 September 1999 | |
| Kate Nye | WLT | 5 January 1999 | |
| Don Opeloge | WLT | 13 May 1999 | |
| Otgonbayaryn Darkhijav | WLT | 9 February 2000 | |
| Muhammed Furkan Özbek | WLT | 24 January 2001 | |
| Angie Palacios | WLT | 12 September 2000 | |
| Phạm Đình Thi | WLT | 5 October 2001 | |
| Chaima Rahmouni | WLT | 25 March 2001 | |
| Hayley Reichardt | WLT | 27 April 1999 | |
| Darya Riazanova | WLT | 24 August 2000 | |
| Marin Robu | WLT | 19 March 2000 | |
| Athena Schrijver | WLT | 19 January 2001 | |
| Yenny Sinisterra | WLT | 4 May 2000 | |
| Juan Solís | WLT | 5 March 1999 | |
| Hossein Soltani | WLT | 2 December 1999 | |
| Feagaiga Stowers | WLT | 17 November 2000 | |
| Ritvars Suharevs | WLT | 11 January 1999 | |
| Afshin Taheri Haji Vand | WLT | 9 March 2000 | |
| Caner Toptaş | WLT | 14 August 2001 | |
| Daniil Vagaytsev | WLT | 13 November 2001 | |
| Estiven Villar | WLT | 12 March 2001 | |
| Yekaterina Vizgina | WLT | 24 October 2001 | |
| Jaden Washington | WLT | 6 June 1999 | |
| Wei Yunban | WLT | 19 June 2001 | |
| Yuto Yamaguchi | WLT | 15 June 2000 | |
| Yeom Da-Hoon | WLT | 31 March 1999 | |
| Alireza Yousefi | WLT | 27 August 2003 | |
| Yu Ssu-Han | WLT | 22 September 1999 | |
| Zhao Jinhong | WLT | 26 May 2001 |