2012 Zomer Olympische Spelen - Atleten
| Atleet | Sport |
|---|---|
 Alysia Johnson | Athletiek |
| Kibwe Johnson | Athletiek |
| Abby Johnston | Aquatics |
 Mayookha Johny | Athletiek |
 Valtteri Jokinen | Judo |
 Damien Joly | Aquatics |
 Natasha Jonas | Boksen |
| Francesca Jones | Gymnastiek |
| Jade Jones | Taekwondo |
 Luuka Jones | Canoe/Kayak |
| Lolo Jones | Athletiek |
| Cullen Jones | Aquatics |
 Kyle Jones | Triatlon |
 Leisel Jones | Aquatics |
 LaVerne Jones-Ferrette | Athletiek |
 Kim Jong | Tafeltennis |
| Pak Jong Chol | Boksen |
| Ri Jong Myong | Worstelen |
| Rim Jong Sim | Gewichtheffen |
 Shin Jong-Hun | Boksen |
| Kim Jong-Hyun | Schieten |
| Jin Jong-Oh | Schieten |
 Maneepong Jongjit | Badminton |
 Thormodur Jonsson | Judo |
 Abigel Joo | Judo |