| Name | Meaning | Gender | Origin |
|---|
| Missy | Bee | Female | Greek |
| Mister | | Unisex | Hebrew |
| Misty | Misty | Female | English |
| Molly | Uncertain, maybe bitter | Female | Hebrew |
| Mortimer | Dead sea | Male | French |
| 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 |
| Murphy | Sea warrior | Male | Gaelic |
| Nelson | Son of Neal | Male | English |
| Nemo | No one | Male | Latin |
| Newman | New man | Male | English |
| Nexus | | Unisex | Hebrew |
| Nibbles | | Unisex | Hebrew |
| Niles | People's Victory | Male | Gaelic |
| Nipper | A small boy | Unisex | English |
| Nugget | As in Chicken | Unisex | English |
| Ogden | Oak valley | Male | English |
| Oprah | Young deer | Female | Hebrew |
| Orlando | Famous country | Male | Germanic |
| Oscar | Divine spear | Male | English |
| Othello | Wealth | Male | German |
| Otis | One who hears well | Male | Greek |
| Pablo | Small | Male | Latin |
| Pax | Peace | Unisex | Latin |
| Peaches | Red, yellow skinned fleshy fruit | Unisex | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Pearl | Pearl | Female | English |
| Pebbles | After the character in 'The Flintstones' cartoons | Female | English |
| Penny | Weaver | Female | Greek |