- O'Brien, Kymberlee M.3
- O'Connor, John T.3
- O'Connor, Michael2
- O'Donnell, Dean Michael15
- Oates, Karen Kashmanian12
- Obien, Rodney1
- Ogilvie, Anne10
- Olinger, David J.1
- Onal, Cagdas2
- Orr, John A.16
- Ostapowicz-Critz, Lori J.2
- Ottmar, Erin R3
- Ottmar, Erin R.1
- Overstrom, Eric W.2