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| O'Brate Grupp, Aurora Marie [1] |
| O'Byrne Orozco, Maria Cecilia [1] |
| O'Callaghan Gordo, Cristina [1] |
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| O'Mullane, William [1] |
| O'Neill, Maria [1] |
| O'Rourke, Thomas [1] |
| Obach Cortadellas, Mercè [1] |
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| Obaco Álvarez, Moisés Lenyn [1] |
| Obando Arroyave, Luis Carlos [1] |
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| Oberhansl, Sabine [1] |
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| Obiol Plana, Aleix [1] |
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| Obiols Fornell, Carme [1] |
| Obiols Guardia, Aida [1] |
| Obiols i Solà, M. Dolors [1] |
| Obiols Llandrich, Joan [1] |
| Obiols Soler, Meritxell [1] |
| Obiols Suari, Núria [1] |
| Obis Ibáñez, Teresa [1] |
| Obis Monné, Aina [1] |
| Obis Monné, Èlia [1] |
| Obiso, Vincenzo [1] |
| Oblitas Cruz, Jimy Frank [1] |
| Obón Estrada, Eleonora [1] |
| Obon San José, David [1] |
| Obón Santacana, Mireia [1] |
| Obrador Cursach, Bartomeu [1] |
| Obrador Espinosa, Pere [1] |
| Obrador Hevia, Antònia [1] |
| Obrador Ruiz, Bartolomé [1] |
| Obrador Sala, Biel [1] |
| Obradors Cherta, Albert [1] |
| Obradors Llobet, Carla [1] |
| Obradors Rial, Núria [1] |
| Obregón Biosca, Saúl Antonio [1] |
| Obregón Gutiérrez, Noemí [1] |
| Obreque Slier, Elias Abel [1] |
| Obućina, Ognjen [1] |
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| Ocampo Castillo, María del Socorro [1] |
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| Ocampo-Martínez, Carlos [1] |
| Ocaña i Rebull, Jordi [1] |
| Ocaña Pallarès, Eduard [1] |
| Ocaña Tejada, Cristina [1] |
| Ochagavía Orbegozo, Helga [1] |
| Ochandorena Acha, Mirari [1] |
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| Ochoa de la Torre, José Manuel [1] |
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| Ogalla Polonio, Aurora [1] |
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| Ogaya Inurrigarra, Romà [1] |
| Ogbonna, Chidiebere [1] |
| Oglietti, Guillermo Celso [1] |
| Ogundeji, Olusegun Israel [1] |
| Oh, Sejin [1] |
| Oh, Young Kyun [1] |
| Ohaneje Osuagwuh, Uchechi Linda [1] |
| Ohannesian Saboundjian, María [1] |
| Ohanyan, Narek [1] |
| Oikonomakou, Maria [1] |
| Ojaghi Kahjogh, Behnam [1] |
| Ojanguren Arranz, Amaia [1] |
