| Name | Gender | Origin |
|---|
| Kenrick | Boy | English, Indian, Scottish |
| Kenrik | Boy | Scottish |
| Kentigern | Unisex | English, Indian, Scottish |
| Kenzie | Unisex | English, Indian, Scottish |
| Kerk | Boy | Scottish |
| Kermichil | Boy | Scottish |
| Kerr | Boy | English, Indian, Scottish |
| Kester | Boy | Scottish |
| Kin | Unisex | Japanese, Scottish |
| Kincaid | Boy | Scottish |
| Kinney | Boy | Scottish |
| Kinnon | Boy | Scottish |
| Kinny | Boy | Scottish |
| Kirk | Boy | English, Indian, Scottish |
| Kirkland | Boy | Scottish |
| Kirklin | Boy | Scottish |
| Kirklyn | Boy | Scottish |
| Knox | Boy | English, Indian, Scottish |
| Kyle | Unisex | English, Indian, Scottish |
| Kynan | Boy | Scottish |
| Kyrk | Boy | Scottish |
| Kyrksen | Boy | Scottish |
| Labhrainn | Boy | Scottish |
| Lachie | Boy | Scottish |
| Lachlan | Boy | Scottish |
| Lagman | Boy | Scottish |
| Laine | Boy | Scottish |
| Laird | Boy | Scottish |
| Lamond | Boy | Scottish |
| Lamont | Boy | English, Indian, Scottish |
| Laochailan | Boy | Scottish |
| Lauchlan | Boy | Scottish |
| Lean | Boy | Scottish |
| Leane | Boy | Scottish |
| Leathan | Boy | Scottish |
| Leith | Boy | Scottish |
| Lennon | Unisex | English, Indian, Scottish |
| Lennox | Boy | Scottish |
| Lenox | Boy | Scottish |
| Leod | Boy | Scottish |
| Les | Unisex | English, Indian, Scottish |
| Leslie | Unisex | English, Indian, Scottish |
| Lindsay | Unisex | English, Indian, Scottish |
| Linsey | Unisex | English, Indian, Scottish |
| Livingstone | Boy | Scottish |
| Llewellyn | Boy | English, Indian, Scottish, Welsh |
| Lloyd | Boy | English, Indian, Scottish, Welsh |
| Logan | Unisex | English, Indian, Scottish |
| Logen | Boy | Scottish |
| Lorne | Boy | English, Indian, Scottish |
| Lornell | Boy | Scottish |
| Ludovic | Boy | English, Indian, Latin, Scottish |
| Lundie | Boy | Scottish |
| Lundy | Unisex | French, Scottish |
| Luthais | Boy | Scottish |
| Lyall | Unisex | Scottish |
| Lydell | Boy | Scottish |
| Lyel | Boy | Scottish |
| Lyndsey | Unisex | English, Indian, Scottish |
| Mac | Boy | Scottish |
| Macdonald | Boy | Scottish |
| Macgregor | Boy | Scottish |