| Name | Meaning | Details |
|---|---|---|
| Mervin | Great Lord | View Details |
| Mervyn | Great Lord | View Details |
| Michigan | Great Lake | View Details |
| Morag | Great | View Details |
| More | Great | View Details |
| Morgan | Great Circle | View Details |
| Morgana | Great Circle | View Details |
| Morna | High-spirited | View Details |
| Moxie | Spirited | View Details |
| Muirne | High-Spirited | View Details |
| Myrna | High-spirited | View Details |
| Oda | Great Field | View Details |
| Onika | Who Is Greater Than God? | View Details |
| Onyekachukwu | Who Is Greater Than God? | View Details |
| Orenda | Great Spirit | View Details |