| Name | Gender | Origin |
|---|
| Machair | Boy | Scottish |
| Machar | Boy | Scottish |
| Mack | Boy | English, Indian, Scottish |
| Mackenzie | Unisex | English, Indian, Scottish |
| Maddock | Boy | Scottish |
| Maddox | Boy | English, Indian, Scottish |
| Maitland | Boy | English, Indian, Scottish |
| Makolm | Unisex | Scottish |
| Malcolm | Unisex | English, Indian, Scottish |
| Malcom | Boy | English, Indian, Scottish |
| Manius | Boy | Latin, Scottish |
| Maoilios | Unisex | Scottish |
| Maolmuire | Boy | Scottish |
| Marcas | Boy | Scottish |
| Martainn | Boy | Scottish |
| Math | Boy | Scottish |
| Mathe | Boy | Hebrew, Scottish |
| Matheson | Boy | Scottish |
| Maxwell | Boy | English, Indian, Scottish |
| Mckenzie | Unisex | English, Indian, Scottish |
| Mealcoluim | Boy | Scottish |
| Melville | Boy | English, French, Indian, Scottish |
| Menzies | Boy | Scottish |
| Micheal | Boy | English, Indian, Scottish |
| Micheil | Boy | Scottish |
| Mitch | Boy | English, Indian, Scottish |
| Mitchel | Boy | Scottish |
| Mitchell | Boy | English, Hebrew, Indian, Scottish |
| Monroe | Unisex | English, Indian, Scottish |
| Montgomery | Boy | English, French, Indian, Scottish |
| Moray | Boy | Scottish |
| Morgan | Unisex | English, French, Indian, Scottish, Welsh |
| Morogh | Boy | Scottish |
| Morven | Unisex | English, Indian, Scottish |
| Muir | Unisex | Scottish |
| Muireach | Boy | Scottish |
| Muireadhach | Boy | Scottish |
| Mungo | Unisex | Scottish |
| Munro | Boy | Scottish |
| Munroe | Boy | Scottish |
| Murchadh | Boy | Scottish |
| Murdoc | Boy | Scottish |
| Murdoch | Boy | English, Indian, Scottish |
| Murdock | Boy | English, Indian, Scottish |
| Murray | Boy | English, Indian, Scottish |
| Nachton | Boy | Scottish |
| Naois | Boy | Scottish |
| Naos | Boy | Scottish |
| Nathair | Boy | Scottish |
| Neacal | Boy | Scottish |
| Neil | Boy | English, Indian, Scottish |
| Neilan | Boy | Scottish |
| Neill | Boy | English, Indian, Scottish |
| Ness | Boy | Scottish |
| Newlin | Boy | Scottish |
| Niall | Boy | Scottish |
| Nichol | Boy | French, Scottish |
| Nicol | Boy | Scottish |
| Norrie | Boy | English, Indian, Scottish |
| Norris | Boy | English, French, Indian, Scottish |
| Norval | Boy | Scottish |
| Oengus | Boy | Scottish |