Starting with letter M
| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 121 | Mack | Celtic | Son of. | M | |
| 122 | Mack | Scottish | Son of. | M | |
| 123 | MacKay | Scottish | Son of fire. | M | |
| 124 | MacKendrick | Scottish | Son of Henry. | M | |
| 125 | MacKenzie | Scottish | Fair; favored one. 'Son of the fair man' or 'Son of Kenzie'. | M | |
| 126 | MacKinley | Scottish | Son of Kinley. | M | |
| 127 | MacKinnon | Scottish | Son of the fair born. | M | |
| 128 | MackIntosh | Scottish | Son of the thane. | M | |
| 129 | Macklin | Celtic | Son of Flann. | M | |
| 130 | Macklyn | Celtic | Son of Flann. | M | |
| 131 | MacLachlan | Scottish | Son of Lachlan. | M | |
| 132 | MacLaine | Scottish | Son of the servant of John. | M | |
| 133 | MacLaren | Scottish | Son of Laren. | M | |
| 134 | MacLean | Gaelic | Son of the handsome man. | M | |
| 135 | MacLean | Scottish | Son of the servant of John. | M | |
| 136 | MacLeod | Scottish | Son of the ugly man. | M | |
| 137 | MacMaureadhaigh | Irish | Son of Murray. | M | |
| 138 | MacMillan | Scottish | Son of the ba!d man. | M | |
| 139 | Macmorris | Shakespearean | 'King Henry V' Officer in the King's army. | M | |
| 140 | MacMurra | Irish | Son of Murray. | M | |