2016 Zomer Olympische Spelen - Atleten
| Atleet | Sport |
|---|---|
 Olumide Olamigoke | Athletiek |
 Raluca Olaru | Tennis |
 Anna Olasz | Aquatics |
 Andrea Olaya | Worstelen |
 Mark Oldershaw | Canoe/Kayak |
 Ihor Olefirenko | Athletiek |
 Sergiu Oleinic | Judo |
| Penelope Oleksiak | Aquatics |
 Thorbjørn Olesen | Golf |
 Peeter Olesk | Schieten |
 Facundo Olezza | Zeilen |
 Andrej Olijnik | Canoe/Kayak |
| Yuliya Olishevska | Athletiek |
| Nélson Oliveira | Wielrennen |
 Ygor Oliveira | Badminton |
| Celso Oliveira | Canoe/Kayak |
| Ingrid Oliveira | Aquatics |
| Larissa Oliveira | Aquatics |
| Jackson Oliveira | Aquatics |
| Flavia Oliveira | Wielrennen |
| Bernardo Oliveira | Boogschieten |
| Anderson Oliveira | Canoe/Kayak |
| Lorrane Oliveira | Gymnastiek |
| Pâmella Oliveira | Triatlon |
| Nicolas Oliveira | Aquatics |