- Onyema, Daniel1
- Oppong, Susanna1
- Ornstein, Graham1
- Orszulak, Adrian R.1
- Osei, Michael1
- Osgood, Adam1
- Ossing, Sarah1
- Ostrum, Taylor1
- Ostwald, Maggie A.1
- Ouellette, Chase1
- Ouellette, Cole1
- Ouellette, Daniel1
- Owen, Morgan1
- Owings, Coleman1
- Ozcilingir, Eren1