| Lachlan |
| Ladislav |
| Laityn |
| Larry |
| Larsson |
| Laszlo |
| Laurence |
| Laurynas |
| Lawrence |
| Lawson |
| Layne |
| Layton |
| Lee |
| Lee-jay |
| Leigh |
| Leighton |
| Leland |
| Lennon |
| Lennox |
| Lenny |
| Leo |
| Leo-james |
| Leon |
| Leonardo |
| Leonidas |
| Leonigio |
| Leon-james |
| Leroy |
| Levi |
| Lewis |
| Leyton |
| Liam |
| Liams |
| Lincoln |
| Linden |
| Lir |
| Lleyton |
| Lloyd |
| Lochlainn |
| Lochlan |
| Lochlann |
| Logan |
| Logan-lee |
| Loghan |
| Lomond |
| Lorcan |
| Lorchan |
| Lorenzo |
| Louie |
| Louis |
| Luc |
| Luca |
| Lucas |
| Lucas-bradley |
| Lucca |
| Lughan |
| Lui |
| Luis |
| Luka |
| Lukas |
| Luke |
| Lukis |
| Luys |
| Lyon |