| Author | Titles | | 1.
| Obligado, Pedro Miguel | 1 | | 2.
| Oblin-Goalou, Monique | 1 | | 3.
| Oblino, 1940- | 1 | | 4.
| Oblíqua Arquitectos | 1 | | 5.
| Obo, Marina, 1944- | 1 | | 6.
| Obolensky, Dimitri | 1 | | 7.
| Obolensky, Dimitri, 1918- | 1 | | 8.
| Obolensky, Joëlle | 1 | | 9.
| Obón Mateos, Mercè | 1 | | 10.
| Obra, Rosa de la | 1 |
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