- O'Donnell, Dean Michael18
- O'Shaughnessy, James C.5
- Okhuysen, Victor1
- Okumus, Pinar1
- Olinger, David J.29
- Olsen, Carissa Lynn1
- Onal, Cagdas11
- Orr, John6
- Osorio, Fernando C. Colon4
- Ottmar, Erin R7
- Ottmar, Erin R.1
- Overstrom, Eric W.5
- Oyewole, Oluwaseun K.1