| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 21 | Jorma | Finnish | Farmer. | M | |
| 22 | Jukka | Finnish | Finnish form of John. | M | |
| 23 | Jussi | Finnish | Finnish form of John. | M | |
| 24 | Kaarl | Finnish | Strong. | M | |
| 25 | Kaarle | Finnish | Strong. | M | |
| 26 | Kaarlo | Finnish | Strong. | M | |
| 27 | Kaisa | Finnish | Pure. | F | |
| 28 | Kal | Finnish | Strong. | M | |
| 29 | Kalevi | Finnish | Hero. | M | |
| 30 | Kalle | Finnish | A form of Carol. | F | |
| 31 | Kalle | Finnish | Strong. | M | |
| 32 | Kalwa | Finnish | Heroine. | F | |
| 33 | Katri | Finnish | Pure. | F | |
| 34 | Katrikki | Finnish | Pure. | F | |
| 35 | Katrina | Finnish | Pure. | F | |
| 36 | Kerrttu | Finnish | Finnish form of Gertrude. | F | |
| 37 | Kivi | Finnish | Stone. | M | |
| 38 | Kyllikki | Finnish | Woman of strength. | F | |
| 39 | Laila | Finnish | Light. | F | |
| 40 | Liisa | Finnish | Consecrated to God. | F | |