Achternamen
| Achternaam | Aantal |
|---|---|
| Kotzur | 1 |
| Koudijs | 1 |
| Kouijzer | 1 |
| Koullen | 8 |
| Koumans | 32 |
| Koursil | 1 |
| Kourtakis | 1 |
| Kousemaker | 1 |
| Kousen | 7 |
| Kouteren, van | 1 |
| Kouters | 8 |
| Kouthoofd | 2 |
| Kouveld | 1 |
| Kouwelaar | 2 |
| Kouwen | 1 |
| Kouwen, van | 11 |
| Kouwenberg | 17 |
| Kouwenbergh | 1 |
| Kouwenhoven | 12 |
| Kouwenhoven, van | 1 |
| Kouwer | 1 |
| Kouwets | 1 |
| Kouws | 1 |
| Kovacic | 1 |
| Kovacs | 2 |