| Name | Meaning | Gender | Origin |
|---|
| Leroy | The king.
| Male | |
| Levi | United | Male | Hebrew |
| Lexie | Protector Of Mankind | Unisex | English |
| Lexus | English variation of Alexios, defending men | Male | Greek |
| Lilah | The Lily | Unisex | |
| Loretta Lynn | | Unisex | Hebrew |
| Lou | Famous Warrior | Male | English |
| Lulabelle | | Unisex | |
| Lunatic | | Unisex | Hebrew |
| Luther | Renowned warrior.
| Male | |
| Lyle | island | Male | Scottish |
| Lynn | A cascade
| Male | Welsh |
| Mac | Son of
| Male | Scottish |
| Macie | Weapon | Unisex | French |
| Maddison | Son Of Maud | Unisex | English |
| Maddy | Of Magdala, Tower | Unisex | English |
| Major | Army or Air Force rank above Captain but below Lieutenant Colonel | Male | Latin |
| Maniac | | Male | Hebrew |
| Marilou | | Unisex | Hebrew |
| Marshall | Man who looks after a nobleman's estate, keeper of the horses; steward | Male | |
| Marty | Of Mars The God Of War, Warlike | Unisex | English |
| Mary Jane | | Unisex | |
| Mason | Worker in stone. | Male | English |
| Micah | who is like the Lord | Male | Hebrew |
| Misery | | Unisex | Hebrew |