Olimpiadas de Verano 2020 - Deportistas
| Deportista | Deporte |
|---|---|
 Maja Buskbjerg Jager | Tiro con arco |
 Reggie Jagers | Atletismo |
 Lisa Jahn | Canoe/Kayak |
 Odei Jainaga | Atletismo |
 Zsuzsanna Jakabos | Aquatics |
| Malte Jakschik | Remo |
 Mimosa Jallow | Aquatics |
 Lea Jamelot | Canoe/Kayak |
 Kirstie James | Ciclismo |
 Tiffany James | |
 Kirani James | Atletismo |
 Nuraisyah Jamil | Vela |
| Alexis Jandard | Aquatics |
 Jazz Janewattananond | Golf |
 Luka Janezic | Atletismo |
 Barbora Janícková | Aquatics |
 Inge Jansen | Aquatics |
| Inge Janssen | Remo |
 Hillary Janssens | Remo |
 Patrik Jány | Tiro |
 Karla Jaramillo | Atletismo |
 Jard | |
| Aleksandra Jarmolinska | Tiro |
 Emil Järudd | Vela |
 Calum Jarvis | Aquatics |