- O'Connell, Maryann J1
- O'Hearn, Marshall David1
- O'Mullan, Brendan1
- O'Neill, Katherine Lee1
- Obal, Joshua Keith1
- Ocasio, Mason Cruz1
- Odegard, Jared Mark1
- Ogasian, Jason R.1
- Olean, Adam Rocco1
- Olson, Jeffrey Stephen1
- Orthodoxou, Demetra1
- Ouellette, Kelsey Donnel1
- Ouellette, Noelle Dionne1
- Owens, Michael Joseph1