| Name | Meaning | Gender | Origin |
|---|
| Mick | Who is like God? | Male | Hebrew |
| Mickey | Who is like God? | Unisex | Hebrew |
| Mikey | Who is like God? | Unisex | Hebrew |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Mocha | Coffee of high quality. | Unisex | English |
| Mojo | Good luck charm. | Unisex | English |
| Moonlight | | Unisex | Hebrew |
| Moriarty | Expert Seaman | Male | English |
| Moss | Drawn out of the water | Male | Hebrew |
| Mozart | | Unisex | Hebrew |
| Muffin | A small cup shaped cake | Unisex | English |
| Muffy | | Unisex | Hebrew |
| Murphy | Sea warrior | Male | Gaelic |
| Murray | Man of the sea | Male | Gaelic |
| Myles | Uncertain, perhaps peaceful | Male | Germanic |
| Neely | Feminine Of Neil Champion. | Unisex | English |
| Neil | Champion | Male | Gaelic |
| Nelson | Son of Neal | Male | English |
| Nevan | Sacred | Male | Gaelic |
| Nevin | Sacred | Male | Gaelic |
| Niamh | Radiance | Unisex | Gaelic |
| Nick | Victory of the people | Male | Greek |
| Nicky | Victory of the people | Unisex | Greek |
| Nolan | Chariot-fighter, champion | Male | Gaelic |
| Oran | Dark-haired | Male | Gaelic |
| Orrin | Little green one | Male | Gaelic |
| Oscar | Divine spear | Male | English |
| Ossian | Little deer | Male | Gaelic |
| Paddy | Patrician | Male | Latin |
| Panda | A bear like Chinese mammal, with distinct black and white markings | Unisex | English |