Author & Contributor Index
- Onuora, Ngozi
- Onwuta, Uche
- Onyango, Rosemary Anyango
- Onyeaghala, Raphael Onyema
- Onyenekwu, Ifeyinwa Uchechi Cindy
- Onyuksel, Cem
- Ooi, Zhiee Jhia
- Oomens, J.
- Oomens, Jos
- OOMENS, JOS
- Ooms, Kristopher J
- Ooms, William Jay
- O, Ook Whan
- Opacic, Gordana
- Opdyke, Matthew R.
- Opdyke, William F.
- Opel, Howard Leonard, Jr.
- Opelka, James Howard
- Opello, Olivia
- Openiyi, Elijah
- Openlands.org
- Openshaw, Stephen James
- Open Society Foundation
- Operskalski, Joachim Thomas
- Opetz, Danielle L.
- Opgenorth, Terry John
- Oplinger, Randy W.
- Oplinger,R.W.
- Opoku-Agyeman, Bernice
- Oppegard, Alfred Lester
- Oppenheimer, John Reed
- Oppenheim, Gary M.
- Oppenheim, James
- Oppenheim, Joseph Harold
- Oppenlander, Joseph Clarence
- Opperman, David Russell
- Opperman, Kay Keyer
- Oppermann, Robert Arthur
- Oppert, Judith Richards
- Oppewal, Donald
- Opryszek, Paul Allen
- Opsahl, James Frederic
- Options Pilot Program
- Opulencia, Rina Bagsic
- Orabi, Wallied
- Orahood, Tammy
- Orailoglu, Afksendios
- Oral History Office, Sangamon State University, Springfield, Illinois
- Oram, Richard W.
- Oram, Robert W.