 Jang Jun | Taekwondo |
 Zhang Jun | Athletiek |
 Cheong Jun Hoong | Aquatics |
 Cory Juneau | Skateboarden |
 Sara Junevik | Aquatics |
 Michael Jung | Ruiter |
| Jung Eun | |
| Jung-Hoo | |
| Kwak Jung-Hye | Schieten |
 Viviane Jungblut | Aquatics |
 Tanumafili Jungblut | Gewichtheffen |
| Marie-Laurence Jungfleisch | Athletiek |
| Phillip Jungman | Schieten |
| Lee Junho | Gymnastiek |
| Li Junhui | Badminton |
 Josh Junior | Zeilen |
| Vagner Junior Souta | Canoe/Kayak |
| Torben Junker | |
| Lin Junmin | Schieten |
 Ella Junnila | Athletiek |
| Yang Junxuan | Aquatics |
| He Junyi | Aquatics |
 Cristofer Jurado | Wielrennen |
 Severo Jesus Jurado López | Ruiter |
 Darija Jurak | Tennis |