| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 581 | Konni | German | Honest advisor. | M | |
| 582 | Konrad | German | Variant of Conrad: Brave adviser; honest advisor. | M | |
| 583 | Kord | German | Honest advisor. | M | |
| 584 | Kort | German | Variant of Cort: Courageous; honest advisor. | M | |
| 585 | Kuhlbert | German | Calm or bright. | M | |
| 586 | Kulbart | German | Calm or bright. | M | |
| 587 | Kulbert | German | Calm or bright. | M | |
| 588 | Kuno | German | Honest advisor. | M | |
| 589 | Kunz | German | Honest advisor. | M | |
| 590 | Kurt | German | Diminutive of the German variant of Conrad: Bold counsel. Honest advisor. | M | |
| 591 | Kurtis | German | Courtier. Also a diminutive of Conrad: Brave adviser. | M | |
| 592 | Lamar | German | Famous land. | M | |
| 593 | Lamarr | German | Famous land. | M | |
| 594 | Lambart | German | Light of land. | M | |
| 595 | Lambert | German | Bright land. Can be used as both a surname and first name. Famous Bearer: Belgian-American actor Christopher Lambert. | M | |
| 596 | Lambrecht | German | Light of land. | M | |
| 597 | Lambret | German | Light of land. | M | |
| 598 | Lambrett | German | Light of land. | M | |
| 599 | Landmari | German | Famous land. | M | |
| 600 | Larenzo | German | Form of Lawrence. | M | |