Olimpiadas de Verano 2020 - Deportistas
| Deportista | Deporte |
|---|---|
 David Jessen | Gimnasia |
 Jet Set | |
 Isaiah Jewett | Atletismo |
 Ji Hyun | |
| Ji In | |
| Ji Su | |
| Ji-Hwan | |
| Ji-Young | |
 Long Jia | Lucha |
| Sun Jiajun | Ciclismo |
| Sun Jiajun | Aquatics |
| Liu Jiali | Ciclismo |
| Li Jialun | Tiro con arco |
| Chen Jiamin | Atletismo |
| Yang Jian | Aquatics |
| Wang Jianan | Atletismo |
| Peng Jianhua | Atletismo |
| Wang Jianjiahe | Aquatics |
| Zhang Jiaqi | Aquatics |
| Jiaqi | |
| Qian Jiarui | Esgrima |
| Xiao Jiaruixuan | Tiro |
| Wu Jiaxin | Tiro con arco |
| Xu Jiayu | Aquatics |
| Yang Jiayu | Atletismo |