Achternamen
| Achternaam | Aantal |
|---|---|
| Jounet | 1 |
| Jouret | 1 |
| Journée | 1 |
| Journier | 1 |
| Joye | 2 |
| Joyeux | 2 |
| Jozefowski | 2 |
| Jozwiak | 1 |
| Juchem | 3 |
| Juchems | 1 |
| Jückers | 1 |
| Jude | 1 |
| Judith | 1 |
| Juditzki | 1 |
| Judong | 4 |
| Juffermans | 7 |
| Jugo | 1 |
| Julicher | 22 |
| Jülichs | 1 |
| Julien | 2 |
| Jumpertz | 7 |
| Junck | 1 |
| Juneman | 3 |
| Jung | 6 |
| Jungbauer | 1 |