Name	Nobel Prize Category	Year Awarded
O'Keefe, John	Medicine	2014
O'Neill, Eugene Gladstone	Literature	1936
Obama, Barack	Peace	2009
Ochoa, Severo	Medicine	1959
Oe, Kenzaburo	Literature	1994
Ohlin, Bertil	Economics	1977
Ohsumi, Yoshinori	Medicine	2016
Olah, George A.	Chemistry	1994
Onsager, Lars	Chemistry	1968
Osheroff, Douglas D.	Physics	1996
Ossietzky, Carl Von	Peace	1935
Ostrom, Elinor	Economics	2009
Ostwald, Wilhelm	Chemistry	1909