| Name | Meaning | Gender | Origin |
|---|
| Lady | Lady | Unisex | English |
| Leticia | Joy | Female | Latin |
| Lil | Lily | Unisex | English |
| Lilia | Lilies | Female | Latin |
| Liliana | Lilies | Female | Latin |
| Lily | Lily | Female | English |
| Lola | Sorrows | Female | Spanish |
| Lucky | Fortunate | Unisex | English |
| Lucy | Light | Female | Latin |
| Maddy | Pet form of Mad- names | Female | English |
| Maggie | Pearl | Female | Greek |
| Magnum | A large type of wine bottle. | Unisex | English |
| Mako | Child of truth | Unisex | Japanese |
| Maria | Bitter | Female | Hebrew |
| Maricruz | Mary of the Cross | Female | Spanish |
| Marilu | | Female | Hebrew |
| Marvel | Miracle | Unisex | English |
| Maxi | Pet form of names starting with Max | Unisex | English |
| Mia | Uncertain, maybe bitter | Female | Hebrew |
| Mimi | Uncertain, maybe bitter | Female | Hebrew |
| Mini | Something smaller than others of its type | Unisex | English |
| Minnie | Will, desire + helmet, protection | Female | Germanic |
| Miranda | She who must be admired | Female | Latin |
| Missy | Bee | Female | Greek |
| Misty | Misty | Female | English |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Munchkin | A very small elflike person. | Unisex | English |
| Neutron | | Unisex | Hebrew |
| Nevada | Snow-covered | Female | Spanish |
| Newt | New settlement, new enclosure | Unisex | English |