| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 461 | Kinnell | Gaelic | From the head of the cliff. | M | |
| 462 | Kye | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 463 | Kylan | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 464 | Kylar | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 465 | Kyle | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 466 | Kylen | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 467 | Kyler | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 468 | Kyran | Gaelic | Dusky; dark-haired. | M | |
| 469 | Kyrell | Gaelic | A place-name referring to the narrows; a wood or a church. | M | |
| 470 | Labhruinn | Gaelic | Laurel. | M | |
| 471 | Lachlann | Gaelic | From Scandinavia. | M | |
| 472 | Lamont | Gaelic | Man of law. | M | |
| 473 | Lamonte | Gaelic | Man of law. | M | |
| 474 | Lawler | Gaelic | One who mumbles. | M | |
| 475 | Leamhnach | Gaelic | Lives near the place abounding in elm trees. | M | |
| 476 | Leannan | Gaelic | Little cloak. | M | |
| 477 | Lennon | Gaelic | Little cloak. | M | |
| 478 | Lennox | Gaelic | Lives near the place abounding in elm trees. | M | |
| 479 | Lesley | Gaelic | From the gray fortress. | M | |
| 480 | Leslie | Gaelic | From the gray fortress. | M | |