Achternamen
| Achternaam | Aantal |
|---|---|
| Offermans | 233 |
| Offeroth | 1 |
| Ofner | 1 |
| Og, van | 2 |
| Ogg | 4 |
| Oggianu | 1 |
| Ogier | 7 |
| Ogiers | 1 |
| Ogievski | 1 |
| Ognibeni | 1 |
| Ograjensek | 1 |
| Ogrinc | 1 |
| Ogtrop, van | 5 |
| Ohl | 1 |
| Ohlenforst | 34 |
| Ohliger | 2 |
| Ohlschegel | 1 |
| Ohmen | 2 |
| Ohn | 1 |
| Ohrem | 2 |
| Oichowiecki | 1 |
| Oidtmann | 2 |
| Oijen | 12 |
| Oijen, van | 58 |
| Oirbains | 1 |