| Kael | Man | Irish Names |
| Kaitlin | Woman | Irish Names |
| Kaitlyn | Woman | Irish Names |
| Kane | Man | Irish Names |
| Kassidy | Unisex | Irish Names |
| Katell | Woman | Irish Names |
| Kathleen | Woman | Irish Names |
| Keagan | Unisex | Irish Names |
| Keaira | Woman | Irish Names |
| Keefe | Man | Irish Names |
| Keegan | Unisex | Irish Names |
| Keelan | Unisex | Irish Names |
| Keelin | Unisex | Irish Names |
| Keelty | Woman | Irish Names |
| Keely | Woman | Irish Names |
| Keenan | Man | Irish Names |
| Keeran | Unisex | Irish Names |
| Keeva | Woman | Irish Names |
| Kegan | Unisex | Irish Names |
| Keir | Unisex | Irish Names |