| Name | Meaning | Gender | Origin |
|---|
| Larry | Man from Laurentum | Male | Latin |
| Leilani | Heavenly blossoms | Male | Hawaiian |
| Lemon | Beloved man | Unisex | English |
| Lennon | Descendant of Leannán or Lonán | Male | Gaelic |
| Lightening | | Unisex | Hebrew |
| Lil | Lily | Unisex | English |
| Lincoln | Lake settlement, lake colony | Male | English |
| Lindley | Flax wood/clearing, lime tree wood | Unisex | English |
| Linus | Flaxen-Haired | Male | Greek |
| Little | | Unisex | Hebrew |
| Logan | Hollow | Unisex | Gaelic |
| Maddie | Pet form of Mad- names | Unisex | English |
| Mannix | Little monk | Male | Gaelic |
| Marshmallow | A soft spongy sweet confectionery. Also a timid person. | Unisex | English |
| Mickey | Who is like God? | Unisex | Hebrew |
| Micro | | Unisex | Hebrew |
| Milo | Uncertain, perhaps peaceful | Male | Germanic |
| Mio | Beautiful cherry | Male | Japanese |
| Mischief | One that causes minor trouble or disturbances | Unisex | English |
| Mitzi | Uncertain, maybe bitter | Unisex | Hebrew |
| Morsel | | Unisex | Hebrew |
| Mosquito | | Unisex | Hebrew |
| Mouse | A small rodent with a long tail and small rounded ears. | Unisex | English |
| Moxie | Ability to face difficulty with courage. | Unisex | English |
| Muffin | A small cup shaped cake | Unisex | English |
| Munchkin | A very small elflike person. | Unisex | English |
| Nevan | Sacred | Male | Gaelic |
| Nibbles | | Unisex | Hebrew |
| Ninja | | Unisex | Hebrew |
| Nipper | A small boy | Unisex | English |