| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 181 | Mabina | Celtic | Nimble. | F | |
| 182 | Maeve | Celtic | A mythical queen. | F | |
| 183 | Maeveen | Celtic | Nimble. | F | |
| 184 | Malvina | Celtic | Handmaiden. | F | |
| 185 | Marella | Celtic | Shining sea. Variant of Muriel. | F | |
| 186 | Marilla | Celtic | Shining sea. Variant of Muriel. | F | |
| 187 | Marvina | Celtic | Renowned friend. Feminine of Marvin: Lives by the Sea. | F | |
| 188 | Maureen | Celtic | Great. | F | |
| 189 | Mavelle | Celtic | Songbud. | F | |
| 190 | Mavie | Celtic | Songbud. | F | |
| 191 | Mavis | Celtic | Songbud. | F | |
| 192 | Meadghbh | Celtic | Nimble. | F | |
| 193 | Medb | Celtic | A mythical queen. | F | |
| 194 | Melva | Celtic | Chief. Handmaiden. | F | |
| 195 | Melvina | Celtic | Handmaiden. | F | |
| 196 | Meredith | Celtic | Protector of the sea. | F | |
| 197 | Meriel | Celtic | Variant of Muriel: Bright sea. | F | |
| 198 | Merna | Celtic | Tender. | F | |
| 199 | Meryl | Celtic | Variant of Muriel: Bright sea. | F | |
| 200 | Mirna | Celtic | Tender. | F | |