O
- O'Keeffe, Gwenn Schurgin
- O-Lee, T.J.
- Oberholzer, Christopher M.
- Odame, Isaac
- Oettgen, A. Barbara
- Oettgen, Barbara
- Ogino, Mark T.
- Ogle, John W.
- Oh, William
- Ohnsman, Christina M.
- Okah, F
- Okamoto, Jeffrey K.
- Okechukwu, Kymika
- Oken, Richard
- Okereke, Ikenna C.
- Okito, Ololade
- Okuizumi-Wu, Yuri
- Okun, Alex
- Okun, Alexander L.
- Olfson, Mark
- Olitsky, Scott E.
- Olivier, Kenneth N.
- Olivo-Marston, Susan E.
- Olness, Karen
- Olness, Karen N.
- Olson, Christina
- Olson, Johanna
- Olson, Lenora M.
- Olson, Nichole D.
- Olson-Kennedy, Johanna
- Olsson, John M.
- Omar, Hatim
- Omar, Said
- Omer, SB
- Oneto, Julieta M.
- Ono, Jennie G.
- Opel, DJ
- Opel, Douglas J.
- Ordway, Monica Roosa
- Orellana, Katherine Atienza
- Orenstein, David M.
- Orenstein, WA
- Orenstein, Walter
- Organ, Hugh
- Orlowski, Craig C.
- Ornstein, Rollyn M.
- Orr, Robert
- Osguthorpe, Russell J.
- Oshimura, Jennifer
- Oskoui, Maryam
- Osorio, Janeth Ceballos
- Osorio, Milena
- Osorio, Snezana Nena
- Ossa, Jose A.
- Ossip, Deborah J.
- Osterhout, Joy A.
- Ostrea, Enrique M.
- Ostrower, Samuel T.
- Ott, Mary A.
- Ottolini, Mary C.
- Ovchinsky, Nadia
- Overberg, Adam
- Overby, Philip
- Owen, Robert
- Owens, Judith A.
- Oyetunji, T
- Ozaki, Michael
- Ozdogan, Sebnem
- Ozer, Elizabeth M.
- Ozuah, Philip O.
- O’Brien, Nicole
- O’Brien, Rebecca
- O’Brien, Rebecca F.
- O’Callahan, Cliff
- O’Connor, Katherine M.
- O’Connor Leppert, Mary L.
- O’Donnell, Melissa
- O’Gwynn, Mark
- O’Halloran, Michael
- O’Hara, Mary
- O’haver, Judith
- O’Keefe, Catherine
- O’Keeffe, Gwenn Schurgin
- O’Leary, Sean T.
- O’Malley, Patricia J.
- O’Malley, Patrick M.
- O’Mara, Peggy
- O’Neil, Joseph
- O’Sullivan, Brian
- O’Sullivan, Brian P.
