601 results
| Osburn | 4 |
| Olivera | 4 |
| Oster | 4 |
| Oman | 3 |
| Oldenburg | 3 |
| Olander | 3 |
| Osbourne | 3 |
| Ostler | 3 |
| Odonoghue | 3 |
| Olah | 3 |
| Owers | 3 |
| Orphan | 3 |
| Okpara | 3 |
| Ole | 3 |
| Onions | 3 |
| Oyewole | 3 |
| Orlandini | 3 |
| Osuji | 3 |
| Olivari | 3 |
| Orji | 3 |
| Ody | 3 |
| Ohri | 3 |
| Orlin | 3 |
| Ohs | 3 |
| Osagie | 3 |
| Oldenburger | 3 |
| Oertle | 3 |
| Obasi | 3 |
| Olien | 3 |
| Overeem | 3 |
| Ohle | 3 |
| Olliff | 3 |
| Oliveria | 3 |
| Oree | 3 |
| Oba | 3 |
| Orlik | 3 |
| Ostermeyer | 3 |
| Orso | 3 |
| Oxner | 3 |
| Orlandi | 3 |
| Odette | 3 |
| Oka | 3 |
| Opper | 3 |
| Osiecki | 3 |
| Ottesen | 3 |
| Orde | 3 |
| Opoku | 3 |
| Ortiz | 3 |
| Odonnell | 3 |
| Oshea | 3 |
| Okolie | 3 |
| Osoba | 3 |
| Olmedo | 2 |
| Oddo | 2 |
| Ortman | 2 |
| Overturf | 2 |
| Okada | 2 |
| Ohagan | 2 |
| Overbeck | 2 |
| Ohm | 2 |
| Okelly | 2 |
| Ocker | 2 |
| Ostrofsky | 2 |
| Oesch | 2 |
| Ording | 2 |
| Ongaro | 2 |
| Otieno | 2 |
| Okere | 2 |
| Oriel | 2 |
| Ohannessian | 2 |
| Osterberger | 2 |
| Oberstein | 2 |
| Ojukwu | 2 |
| Oosterbaan | 2 |
| Olives | 2 |