| Name | Meaning | Gender | Origin |
|---|
| Keri | Country of the children of Ciar | Female | Gaelic |
| Kerri | Country of the children of Ciar | Female | Gaelic |
| Kerry | Country of the children of Ciar | Female | Gaelic |
| Kevina | Beautiful at birth | Female | Gaelic |
| Kiara | Clear | Female | Latin |
| Kiera | Dark | Female | Gaelic |
| Kierra | Dark | Female | Gaelic |
| Kira | Dark | Female | Gaelic |
| Kirby | Church settlement | Female | Norse |
| Kona | World rule | Unisex | Gaelic |
| Kyla | Church | Female | Gaelic |
| Lachlan | Warrior from the Land of the Lochs | Unisex | Gaelic |
| Lana | Rock | Female | Gaelic |
| Lee | Clearing, meadow | Female | English |
| Lesley | Holly Garden | Female | Gaelic |
| Leslie | Holly Garden | Female | Gaelic |
| Lesly | Holly Garden | Female | Gaelic |
| Lia | Uncertain, possibly from Rosalia | Female | Italian |
| Liadan | Grey Lady | Female | Irish |
| Lil | Lily | Unisex | English |
| Lindsay | Uncertain, perhaps dark lake | Female | Gaelic |
| Logan | Hollow | Unisex | Gaelic |
| Luca | Man from Lucania | Unisex | Greek |
| Lucky | Fortunate | Unisex | English |
| Mab | Happiness | Female | English |
| Macha | Plain | Female | English |
| Maille | Pearl | Female | English |
| Maire | Bitter | Female | English |
| Mairead | Pearl | Female | Greek |
| Maisie | Pet form of Mairead | Female | Gaelic |