| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 441 | Kiani | Irish | Variant of Kian. Ancient. | F | |
| 442 | Kianna | Irish | Variant of Kian. Ancient. | F | |
| 443 | Kianni | Irish | Variant of Kian. Ancient. | F | |
| 444 | Kiara | Irish | Dark. Feminine of Ciaran. Name of a saint. | F | |
| 445 | Kiauna | Irish | Variant of Kian. Ancient. | F | |
| 446 | Kiera | Irish | Feminine of the Irish Gaelic Kieran. Dusky; dark-haired. | F | |
| 447 | Kinnat | Irish | Archaic. | F | |
| 448 | Kiona | Irish | Variant of Kian. Ancient. | F | |
| 449 | Kionah | Irish | Variant of Kian. Ancient. | F | |
| 450 | Kioni | Irish | Variant of Kian. Ancient. | F | |
| 451 | Kionna | Irish | Variant of Kian. Ancient. | F | |
| 452 | Kit | Irish | Diminutive of Katherine: Pure. Clear. From the Gaelic form Caitlin. | F | |
| 453 | Kitty | Irish | Diminutive of Katherine: Pure. Clear. From the Gaelic form Caitlin. | F | |
| 454 | Labhaoise | Irish | Warrior maiden. | F | |
| 455 | Laetitia | Irish | Irish form of Letitia: happy. | F | |
| 456 | Lana | Irish | A diminutive of Alana: Child. Famous Bearer: American actress Lana Turner. | F | |
| 457 | Leena | Irish | Wet meadow. | F | |
| 458 | Leila | Irish | Name of a saint. | F | |
| 459 | Levane | Irish | The elm tree. | F | |
| 460 | Lil | Irish | Name of a saint. | F | |