| Name | Meaning | Gender | Origin |
|---|
| Lexi | Defending men | Female | Greek |
| Lexy | Defending men | Unisex | Greek |
| Liam | Will, desire and helmet, protection | Male | Germanic |
| Lily | Lily | Female | English |
| Lizzie | My God is a vow | Unisex | Hebrew |
| Lizzy | My God is a vow | Unisex | Hebrew |
| Logan | Hollow | Unisex | Gaelic |
| Loretta | Laurel | Female | Latin |
| Luca | Man from Lucania | Unisex | Greek |
| Lucille | Light | Female | Latin |
| Lucky | Fortunate | Unisex | English |
| Lucy | Light | Female | Latin |
| Maddy | Pet form of Mad- names | Female | English |
| Maggie | Pearl | Female | Greek |
| Marge | Pearl | Female | Greek |
| Mason | Bricklayer | Male | French |
| Maverick | Dissenter | Unisex | English |
| Max | Little Maximus | Male | Latin |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Meg | Pearl | Female | Greek |
| Mickey | Who is like God? | Unisex | Hebrew |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Mindy | Pet form of Melinda | Female | English |
| Minnie | Will, desire + helmet, protection | Female | Germanic |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Morgan | Uncertain, perhaps bright sea | Female | Welsh |
| Munchkin | A very small elflike person. | Unisex | English |
| Murphy | Sea warrior | Male | Gaelic |