| Kaal | 
| Kalf (14) | 
| Kalkeren | 
| Kamermans | 
| Kampen | 
| Kappelle | 
| Kars (7) | 
| Kat (2) | 
| Keijzer (2) | 
| Kerkhoven | 
| Kivimaki | 
| Klaassen (5) | 
| Kleijssen | 
| Klis | 
| Kloet (2) | 
| Klok (2) | 
| Klooker | 
| Klopper | 
| Klut (9) | 
| Kluwe (3) | 
| Knaap (4) | 
| Knikker | 
| Knoop | 
| Knoops | 
| Kobes | 
| Koele (2) | 
| Koelewaard | 
| Koeman | 
| Kok (2) | 
| Komen (2) | 
| Koning (2) | 
| Kooger | 
| Kooij | 
| Kool | 
| Koopman (2) | 
| Kooy | 
| Kors (2) | 
| Korse (6) | 
| Korsen (2) | 
| Korsse | 
| Kostelijk | 
| Koster (2) | 
| Kox | 
| Kramer | 
| Kroeshaar | 
| Krom | 
| Kruijver | 
| Kruiver | 
| Krul | 
| Kuijken | 
| Kuijper (9) | 
| Kuijt (2) | 
| Kwak (2) |