| Author | Titles | | 1.
| Osenberg, Julia | 1 | | 2.
| Osenberg, Ruth | 1 | | 3.
| Osers, Ewald | 2 | | 4.
| Osgood, Charles E., 1916- | 2 | | 5.
| Osgood, Cornelius | 1 | | 6.
| Oshima, Mark | 1 | | 7.
| Oshima, Nagisa, 1932-2013 | 2 | | 8.
| Osio, Agostino | 2 | | 9.
| Oskar, 1913-1995 | 0 | | 10.
| Author is: Lobo, Óscar Pinto, 1913-1995 | 19 | | 11.
| Oskar Kokoschka, 1886-1980 | 0 | | 12.
| Author is: Kokoschka, Oskar, 1886-1980 | 13 |
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