| Julie | Woman | French Names |
| Juliette | Woman | French Names |
| Jumeaux | Unisex | French Names |
| Jumelle | Woman | French Names |
| Juneau | Unisex | French Names |
| Lace | Woman | French Names |
| Lafayette | Unisex | French Names |
| Lamont | Man | French Names |
| Lancelot | Man | French Names |
| Laramie | Unisex | French Names |
| Larue | Unisex | French Names |
| Laure | Woman | French Names |
| Laurent | Man | French Names |
| Lave | Unisex | French Names |
| Leal | Unisex | French Names |
| Léandre | Man | French Names |
| LeBlanc | Unisex | French Names |
| Lebron | Man | French Names |
| Legrand | Man | French Names |
| Leon | Man | French Names |