| Name | Meaning | Details |
|---|---|---|
| Madison | Son Of Matthew | View Details |
| Magdi | Person From Magdala | View Details |
| Magee | Son Of Aodh | View Details |
| Mahoney | Son Of The Bear | View Details |
| Makenna | Son Or Descendent Of Kenneth | View Details |
| Mallison | Son Of Mary | View Details |
| March | Month Of March Or Walk In Unison | View Details |
| Marquez | Son Of Marco | View Details |
| Mather | Person Who Mows | View Details |
| Mattox | Son Of Madoc | View Details |
| Mavis | Song Thrush | View Details |
| Maxon | Son Of Max (The Greatest) | View Details |
| McCall | Son Of The Battle Chief | View Details |
| McClure | "Son Of Ordars Follower" | View Details |
| McCormick | Son Of Cormac | View Details |