- O'Rawe, Dr. Mary1
- Ogden, William1
- Oglesby, Ross R1
- Okoli, Pontian1
- Oliva, Robert R.1
- Oliver, Covey T.1
- Omara, Andy1
- Onzivu, William1
- Orban, Frank A., III1
- Ordower, Henry1
- Orrego Vicuña, Francisco1
- Osakwe, Chris1
- Ostas, Daniel T.1
- Ottley, Bruce L.1
- Ottley, Younghee Jin1
- Oyhanarte, Martin1
- Padilla, David J.1
- Pagnattaro, Marisa Anne1
- Pagés, José R.1
- Pandya, Dyuti, LL.M.1