Achternamen
| Achternaam | Aantal |
|---|---|
| Kouthoofd | 2 |
| Kouveld | 1 |
| Kouwelaar | 2 |
| Kouwen | 1 |
| Kouwen, van | 11 |
| Kouwenberg | 21 |
| Kouwenbergh | 1 |
| Kouwenhoven | 13 |
| Kouwenhoven, van | 1 |
| Kouwer | 1 |
| Kouwets | 1 |
| Kouws | 1 |
| Kovacic | 1 |
| Kovacs | 2 |
| Kowalczyk | 1 |
| Kowald | 1 |
| Kowalski | 2 |
| Kowski | 1 |
| Kox | 30 |
| Koyen | 4 |
| Koza | 1 |
| Kozak | 3 |
| Kozanidis | 1 |
| Koziana | 1 |
| Kozijn | 1 |