| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 821 | Korey | Irish | Spear bearer. Also a variant of Corey: From the hollow. | M | |
| 822 | Kye | Irish | A place-name referring to the narrows; a wood or a church. | M | |
| 823 | Kylan | Irish | A place-name referring to the narrows; a wood or a church. | M | |
| 824 | Kylar | Irish | A place-name referring to the narrows; a wood or a church. | M | |
| 825 | Kyle | Irish | A place-name referring to the narrows; a wood or a church. | M | |
| 826 | Kylen | Irish | A place-name referring to the narrows; a wood or a church. | M | |
| 827 | Kyler | Irish | A place-name referring to the narrows; a wood or a church. | M | |
| 828 | Kyran | Irish | Dark. | M | |
| 829 | Kyrell | Irish | A place-name referring to the narrows; a wood or a church. | M | |
| 830 | Lacey | Irish | Surname. | M | |
| 831 | Lakeland | Irish | Home of the Norse. | M | |
| 832 | Lalor | Irish | Leper. | M | |
| 833 | Lany | Irish | Servant. | M | |
| 834 | Laoghaire | Irish | Shepherd. | M | |
| 835 | Laoidhigh | Irish | Poetic. | M | |
| 836 | Laughlin | Irish | Servant. | M | |
| 837 | Leachlainn | Irish | Servant. | M | |
| 838 | Leary | Irish | Cattle keeper. | M | |
| 839 | Leathlobhair | Irish | Leper. | M | |
| 840 | Lee | Irish | Poetic. | M | |