| Name | Meaning | Gender | Origin |
|---|
| Lady | Lady | Unisex | English |
| Lassie | Young girl | Female | English |
| Lemon | Beloved man | Unisex | English |
| Lex | Defending men | Unisex | Greek |
| Lexus | A brand of car | Female | English |
| Liberty | Freedom | Female | Latin |
| Licorice | Confection made from the licorice root. | Unisex | English |
| Lily | Lily | Female | English |
| Lime | | Unisex | Hebrew |
| Lizzy | My God is a vow | Unisex | Hebrew |
| Lloyd | Grey | Male | Welsh |
| Lois | Battle Maiden | Female | Greek |
| Lucky | Fortunate | Unisex | English |
| Magdalene | Of Magdala | Female | Hebrew |
| Maggie | Pearl | Female | Greek |
| Marshmallow | A soft spongy sweet confectionery. Also a timid person. | Unisex | English |
| Matilda | Powerful battler | Female | Germanic |
| Maverick | Dissenter | Unisex | English |
| Maya | Uncertain, perhaps mother or great one | Female | Greek |
| Mayer | Clever | Male | Hebrew |
| Medusa | Cunning | Unisex | English |
| Mercedes | Mercies | Female | Spanish |
| Mickey | Who is like God? | Unisex | Hebrew |
| Mischief | One that causes minor trouble or disturbances | Unisex | English |
| Missy | Bee | Female | Greek |
| Mittens | | Unisex | Hebrew |
| Mohini | Charming | Female | Sanskrit |
| Monster | A creature of frightening appearance | Unisex | English |
| Moo | | Unisex | Hebrew |
| Mouse | A small rodent with a long tail and small rounded ears. | Unisex | English |