- O'Brien, Kymberlee M.1
- O'Brien, Megan1
- O'Connor, Michael4
- O'Donnell, Dean Michael33
- O'Rourke, James P.4
- O'Shaughnessy, James C.11
- Okumus, Pinar1
- Olinger, David J.94
- Olsen, Carissa Lynn15
- Olson, Sarah D19
- Onal, Cagdas47
- Orr, John A.53
- Ottmar, Erin R4
- Overstrom, Eric W.3
- Oyewole, Oluwaseun K.2