Polska namn, ca topp 20 tror jag
1. Nowak (203,506; from nowy "newman")
2. Kowalski (139,719; from kowal "smith")
3. Wiśniewski (109,855; from wiśnia "cherry")
4. Wójcik (99,509; from wójt, a noun describing chief officer of a group of a villages)
5. Kowalczyk (97,796, from kowalek "smithy")
6. Kamiński (94,499; from kamień "stone")
7. Lewandowski (92,449; from lewantyna "Levantine")
8. Zieliński (91,043; from zielony "green")
9. Szymański (89,091; from Szymon, equivalent to Simon)
10. Woźniak (88,039; from wóz, "car")
11. Dąbrowski (86,132; from dąb "oak tree")
12. Kozłowski (75,962; from kozioł "goat")
13. Jankowski (68,514; from Janek, equivalent to John)
14. Mazur (66,773; from Mazury, the region in Poland)
15. Wojciechowski (66,361; from the name Wojciech, equivalent to Adalbert)
16. Kwiatkowski (66,017; from kwiat "flower")
17. Krawczyk (64,048; from diminutive of "tailor")
18. Kaczmarek (61,816; from karczma "inn")
19. Piotrowski (61,380; from Piotr, equivalent to Peter)
20. Bagiński (60,492; from baginiak "master")
21. Grabowski (58,393; from grab "hornbeam")