| Navn | Total | Navn | Total | Navn | Total | Navn | Total | Navn | Total |
|---|
| o Breve | 1 | Odescalchi | 2 | Ohme | 1 | Olavson | 57 | Olivo y Puga | 1 |
| o de Castilla | 1 | Odile, St. | 1 | Ohningen | 5 | Olavsson | 11 | Olivos | 1 |
| Oakley | 1 | Odin | 1 | Öhningen, von | 4 | Olavsson Hvitbein de Vestfold I | 1 | Olivos Poch | 4 |
| Oakly | 2 | Odingselles, de | 1 | Öhningen * | 1 | Olba (Alda) | 1 | Olivos Puga | 1 |
| Oaks | 1 | Odingsells | 1 | Oilly, d' | 2 | Old | 3 | Ollanedel | 1 |
| Oatillo | 1 | ODINGSELLS, DE | 3 | Oilly III, d' | 1 | Old, The | 1 | Ollen | 1 |
| Obelensky | 1 | Odinson | 1 | Oilly Norton, d' | 1 | Oldenburg | 28 | Ollion | 2 |
| Obella Ruiz de Ocaña, de | 1 | Odinsson | 2 | Oisy, d' | 8 | Oldenburg, of | 2 | Olmey | 1 |
| Obotrites, the | 1 | Odo | 1 | Ojeda Figueroa | 1 | Oldenburg, von | 25 | Olmos | 11 |
| Obotrites (Reina Consorte de Suecia), de los | 1 | Odoriz | 1 | Ojeda Ramírez | 1 | Oldenburg IX | 1 | Olmos de Aguilera | 3 |
| Ocampo Alvear | 2 | Odsdatter | 2 | Ojvaresi | 1 | Oldenburg V | 1 | Olmos de Aguilera y Estrada | 1 |
| Ocampo Lozano | 1 | Oduulf | 1 | Okan | 1 | Olderkjær | 1 | Olmos y Black | 1 |
| Ocampo Ocampo | 3 | Oeden | 1 | Olaf of Dublin | 1 | Olderøy | 1 | Olmos y Cabanillas | 1 |
| Ocampo Regueira | 5 | Oeren | 1 | Olafsdatter | 1 | Oldham | 1 | Olof Skotkonung Eriksson av Sverige | 1 |
| Ocampo Tellechea | 1 | Oeren, d' | 1 | Olafsdatter Dublin | 1 | Olds | 3 | Olofsdatter | 3 |
| Ocampo Ugarte | 1 | Oeren, de | 2 | Olafsdotter | 1 | Ole | 2 | Olofsdotter | 2 |
| OCAMPO Y RAMOS MEJIA | 1 | Oeren, Von | 1 | Olafsdottir | 1 | Olesd | 1 | Olofsdottir | 3 |
| Occidental | 1 | Oettingen-Baldern, von | 1 | Olafsen | 1 | Olesdatter | 31 | Olofson Haard | 1 |
| Ochagavía Echaurren | 2 | Of | 7 | Olafsen Pincerna | 1 | Olesen | 13 | Olofssdottir | 1 |
| Ochagavía Errázuriz | 1 | Offenberg, von | 1 | Ólafsson | 13 | Oleson | 27 | Olofsson | 1 |
| Ochagavía Hurtado | 9 | Offersdatter Hundevad | 1 | Olafsson of Sweden | 1 | Olgivie Countess of Angus | 1 | Olofsson of Isle of Man II | 1 |
| Ochagavía Larraín | 8 | Offesen Nielsen Neb | 1 | Olafsson Prince of Sweden | 1 | Oliphant | 2 | Oloron, d' | 4 |
| Ochagavia Ruiz-Tagle | 1 | Offesen Panter | 1 | Olafssøn Sættem | 1 | Oliva, de | 1 | Olsborg | 3 |
| Ochagavía Valdés | 5 | Offessøn Rød | 1 | Olaisdatter | 1 | Olivares Eyzaguirre | 3 | Olsdatter | 208 |
| Ochaner | 2 | Offley | 1 | Olaisen | 39 | Olivares Galleguillos | 1 | Olsdatter Aas | 3 |
| Ochoa de la Vega | 1 | Offutt | 1 | Olaisen Myhrstad | 2 | Olivares Padilla | 2 | Olsdatter Baardsen | 1 |
| Ochsen | 1 | Ofstad | 1 | Olaisen Svensson | 2 | Olivares Swett | 1 | Olsdatter Brems | 1 |
| Ochtreda | 1 | Ogden | 1 | Olaison | 1 | Olivares Uribe, de | 1 | Olsdatter Farstad | 1 |
| Od | 1 | Ogg | 1 | Olason | 2 | Olivares y López de la Vega, de | 1 | Olsdatter Gram | 1 |
| Oda | 3 | Ogilvie | 1 | Olasson King of Dublin | 1 | Olivares y Uribe, de | 1 | Olsdatter Harr | 1 |
| Oddesen Sundsvoll | 1 | Ogilvie 4th Earl of Angus | 1 | Olausdatter | 1 | Olivarius | 4 | Olsdatter Trane | 2 |
| Oddingseles, de | 2 | Ogilvie 5th Earl of Angus | 1 | Olausen Steen | 2 | Oliveira | 3 | Olsdatter Vika | 1 |
| Oddland | 8 | Ogilvy | 9 | Olav | 2 | Oliveira Cézar, de | 2 | Olsen | 570 |
| Oddmundson | 4 | Ogine | 1 | Olav II Haraldsson den Hellige av Norge | 1 | Oliveira Cézar y Bunge, de | 1 | Olsen (Meyer) | 1 |
| Oddsdatter | 4 | Ogmundsdatter | 2 | Olav skottekongdtr | 2 | Oliveira Cezar y Diana, de | 1 | Olsen Bachke | 1 |
| Oddsdóttir | 1 | Ogmundsdotter | 2 | Olavdatter | 1 | Oliver | 2 | Olsen Blix | 1 |
| Oddson | 1 | Ogmundson | 3 | Olavdtr | 3 | Olivera | 1 | Olsen Hverven | 1 |
| Odensels, de | 1 | Ogmundsson | 9 | Olavdtr. Digre | 1 | Olivera Molina | 6 | - | - |
| Odensland | 1 | Ogmundsøn | 1 | Olavsdatter | 38 | Olivera y Astorga, de | 1 | - | - |
| Oderup | 1 | Ogne Princess of | 1 | Olavsdatter de Klarsynte | 1 | Olivera y Piriz | 1 | - | - |
| Odes Bishop | 1 | Ohlsson | 1 | Olavsdottir | 1 | Olivero Quintana Gautschi | 1 | - | - |
