Olimpiadas de Verano 2020 - Deportistas
| Deportista | Deporte |
|---|---|
 Anastasiya Bryzhina | |
 Marcin Brzezinski | Remo |
| Artur Brzozowski | Atletismo |
 Yousif Bu Arish | Aquatics |
 Ebrima Buaro | Aquatics |
 Alexander Bublik | Tenis |
 Rushlee Buchanan | Ciclismo |
 Simon Bucher | Aquatics |
 Matthijs Buchli | Ciclismo |
 Emanuel Buchmann | Ciclismo |
 Charlotte Buck | Remo |
| Charlie Buckingham | Vela |
 Ben Buckingham | Atletismo |
| Rayna Buckle | Aquatics |
 Jakub Buczek | Remo |
 Siri Arun Budcharern | Aquatics |
| Anatoliy Budyak | Ciclismo |
 Laura Bueno | Atletismo |
 Leticia Bufoni | Patineta |
 Joshua Bugajski | Remo |
| Philipp Buhl | Vela |
 Laerke Buhl-Hansen | Vela |
 Iuliana Buhus | Remo |
| Kim Bui | Gimnasia |
 Bianca Buitendag | Surf |