| 1. | oliwia |
3846 |
| 2. | olivia |
283 |
| 3. | olga |
180 |
| 4. | otylia |
65 |
| 5. | oleksandra |
64 |
| 6. | oliviia |
57 |
| 7. | oktawia |
47 |
| 8. | ola |
38 |
| 9. | olimpia |
24 |
| 10. | ofelia |
21 |
| 11. | oriana |
15 |
| 12. | oksana |
10 |
| 13. | olena |
10 |
| 14. | olesia |
9 |
| 15. | olha |
5 |
| 16. | odetta |
3 |
| 17. | oryslava |
2 |
| 18. | olympia |
2 |
| 19. | octavia |
2 |
| 20. | oryna |
2 |
| 21. | ophelia |
2 |
| 22. | oriyan |
0 |
| 23. | omena |
0 |
| 24. | otgontsetseg |
0 |
| 25. | odette |
0 |
| 26. | oyungerel |
0 |
| 27. | olena-viktoriia |
0 |
| 28. | orianthi |
0 |
| 29. | olyvia |
0 |
| 30. | orieta |
0 |
| 1. | oliwier |
2578 |
| 2. | oskar |
1683 |
| 3. | olaf |
434 |
| 4. | olivier |
252 |
| 5. | oleksandr |
168 |
| 6. | oliver |
132 |
| 7. | olgierd |
68 |
| 8. | orest |
60 |
| 9. | oliwer |
51 |
| 10. | oscar |
44 |
| 11. | olek |
43 |
| 12. | oktawian |
43 |
| 13. | oleksii |
27 |
| 14. | ostap |
27 |
| 15. | oleg |
14 |
| 16. | omar |
12 |
| 17. | oleksander |
6 |
| 18. | oleh |
6 |
| 19. | otto |
5 |
| 20. | oleksiy |
4 |
| 21. | owen |
4 |
| 22. | orlando |
3 |
| 23. | osman |
3 |
| 24. | oles |
3 |
| 25. | onufry |
2 |
| 26. | orion |
2 |
| 27. | ollie |
2 |
| 28. | oktavian |
2 |
| 29. | oktawiusz |
2 |
| 30. | orhan |
2 |