Slovenia and Croatia each have separate statistical data about most frequent surnames. The list of common surnames somewhat overlap, but most of surnames in each respective country differ.
Croatia
This is the list of most common (most frequent) surnames in Croatia. Source: Croatian Encyclopaedia of Surnames
- 1. Horvat (22.225)
- 2. Kovacevic /Kovachevich/ (15.835)
- 3. Babic /Babich/ (13.150)
- 4. Maric /Marich/ (11.617)
- 5. Novak (11.396)
- 6. Juric /Jurich/ (11.356)
- 7. Kovacic /Kovachich/ (11.171)
- 8. Vukovic /Vukovich/ (10.582)
- 9. Knezevic /Knezhevich/ (10.554)
- 10. Markovic /Markovich/ (10.074)
- 11. Petrovic /Petrovich/ (9.957)
- 12. Matic /Matich/ (9.960)
- 13. Tomic /Tomich/ (9.538)
- 14. Kovac /Kovach/ (8.997)
- 15. Pavlovic /Pavlovich/ (8.759)
- 16. Bozic /Bozich/ (8.258)
- 17. Blazevic /Blazevich/ (8.152)
- 18. Grgic /Grgich/ (8.010)
- 19. Pavic /Pavich/ (7.538)
- 20. Radic /Radich/ (7.406)
- 21. Peric /Perich/ (7.351)
- 22. Filipovic /Filipovich/ (7.321)
- 23. Saric /Sharich/ (7.184)
- 24. Lovric /Lovrich/ (7.131)
- 25. Vidovic /Vidovich/ (6.986)
- 26. Perkovic /Perkovich/ (6.903)
- 27. Popovic /Popovich/ (6.797)
- 28. Bosnjak /Boshnjak/ (6.760)
- 29. Jukic /Jukich/ (6.653)
- 30. Barisic /Barishich/ (6.417)
Slovenia
Most frequent (or most common) surnames in Slovenia is as follows:
- 1. Novak (11.307)
- 2. Horvat (10.017)
- 3. Krajnc (5.708)
- 4. Kovacic /Kovachich/ (5.639),
- 5. Zupancic /Zupanchich/ (5.103)
- 6. Kovac /Kovach/ (4.800)
- 7. Potocnik /Potochnik/ (4.738)
- 8. Mlakar (4.000)
- 9. Vidmar (3.938)
- 10. Kos (3.914)
- 11. Golob (3.883)
- 12. Turk (3.526)
- 13. Bozic /Bozhich/ (3.511)
- 14. Kralj (3.403)
- 15. Zupan (3.336)
- 16. Korosec /Koroshec/ (3.296)
- 17. Bizjak (3.265)
- 18. Hribar (3.148)
- 19. Kotnik (3.078)
- 20. Rozman (2.987)
- 21. Kavcic /Kavchich/ (2.956)
- 22. Petek (2.900)
- 23. Kastelic (2.861)
- 24. Kolar (2.848)
- 25. Hocevar /Hochevar/ (2.822)
- 26. Zagar /Zhagar/ (2.820)
- 27. Oblak (2.805)
- 28. Kosir /Koshir/ (2.702)
- 29. Koren (2.675)
- 30. Klemencic /Klemenchich/ (2.438)