| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Morna | - | Irish, Scottish | ||
| Morrigan | - | Irish Mythology | ||
| Moyna | - | Irish, Scottish | ||
| Moyra | - | Irish, Scottish | ||
| Muadhnait | MOO-nat | Irish | ||
| MuirÍN | - | Irish | ||
| Muirchertach | - | Irish | ||
| Muireadhach | - | Irish, Scottish | ||
| Muireann | - | Irish | ||
| Muiredach | - | Irish | ||
| Muirenn | - | Irish, Irish Mythology | ||
| Muirgel | - | Irish | ||
| Muirgen | - | Irish, Irish Mythology | ||
| Muirgheal | - | Irish | ||
| Muiris | - | Irish |