| Author | Titles | | 1.
| O'Driscoll, Angela | 1 | | 2.
| Odul, Pascal | 1 | | 3.
| Odum, Eugene P., 1913- | 7 | | 4.
| Oechsli, Christopher G. | 1 | | 5.
| Oechslin, Werner, 1944- | 8 | | 6.
| Oederlin, Chantal | 3 | | 7.
| Oeghoede, Nina | 2 | | 8.
| Oehlen, Albert, 1954- | 5 | | 9.
| Oehlen, Markus, 1956- | 1 | | 10.
| Oehlenschläger, Adam | 1 |
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