| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 661 | Klaude | Latin | Lame. | M | |
| 662 | Klaudi | Latin | Lame. | M | |
| 663 | Klaudio | Latin | Has a limp; lame. | M | |
| 664 | Klaudius | Latin | Lame. | M | |
| 665 | Klemenis | Latin | Merciful. | M | |
| 666 | Klemens | Latin | Merciful. | M | |
| 667 | Kliment | Latin | Merciful. | M | |
| 668 | Konstancji | Latin | Constant. | M | |
| 669 | Konstantin | Latin | Constant. | M | |
| 670 | Konstantinus | Latin | Constant. | M | |
| 671 | Konstanty | Latin | Constant. | M | |
| 672 | Konstanz | Latin | Constant. | M | |
| 673 | Kornel | Latin | Horn. | M | |
| 674 | Korneli | Latin | Horn. | M | |
| 675 | Kostas | Latin | Constant. | M | |
| 676 | Krelis | Latin | Horn. | M | |
| 677 | Labhras | Latin | Laurel. | M | |
| 678 | Labrencis | Latin | Laurel. | M | |
| 679 | Lacy | Latin | From Latius's estate. | M | |
| 680 | Laiurenty | Latin | Laurel. | M | |