27 last names begin with J
- Jacobs (2)
- Jacobse (1)
- Jacquemijns (2)
- Jans (4)
- Jansen (40)
- Jansen (Stammen) (1)
- Jansen Burgers (1)
- Janssen (27)
- Janssen Lamberts (1)
- Janssens (5)
- Jardry (Cornet) (1)
- Jas (1)
- Jaskulski (1)
- Jenneke Jan (of Johanna Joannis) (1)
- Jillis (1)
- Jong (1)
- Jong (de) (28)
- Jong, (de) (1)
- Jonge (de) (1)
- Jongh (de) (3)
- Jonker (1)
- Joosten (1)
- Jorissen (1)
- Jozen (2)
- Jurdes (1)
- Jurriens (2)
- Jütting (1)
