| Author | Titles | | 1.
| Obal, Liliana | 1 | | 2.
| Obalk, Hector, 1960- | 2 | | 3.
| Obalne Galerije (Piran, Eslovénia) | 3 | | 4.
| O'Bannon, George W. | 1 | | 5.
| Obata, Kazuko | 1 | | 6.
| Obaya, Xandru | 1 | | 7.
| Obayashi, Nobuhiko | 1 | | 8.
| Obenaus, Matthias, 1986- | 1 | | 9.
| Oberbreyer, Max | 6 | | 10.
| Oberdorfer, Aldo | 1 |
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