| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 181 | Lynnette | Welsh | Variant of ancient Welsh given name Eluned: From 'cilun' meaning idol. In Arthurian legend Lynette accompanied Sir Gareth on a knightly quest. | F | |
| 182 | Mabli | Welsh | Welsh form of Mabel, meaning lovable. | F | |
| 183 | Maegan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 184 | Mair | Welsh | Bitter. | F | |
| 185 | Mali | Welsh | Welsh form of Molly: bitter. | F | |
| 186 | Maredud | Welsh | Magnificent. | F | |
| 187 | Marged | Welsh | Pearl. | F | |
| 188 | Margred | Welsh | Pearl. | F | |
| 189 | Mari | Welsh | Variant of Mary, meaning bitter. Favored prefix for blended names like Maribel. | F | |
| 190 | Maygan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 191 | Meagan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 192 | Meaghan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 193 | Meeghan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 194 | Meggan | Welsh | Variant of Margaret - pearl - based on the abbreviation Meg. | F | |
| 195 | Meghan | Welsh | Pearl. | F | |
| 196 | Meirion | Welsh | Name derived from the old county of Merionethshire. | F | |
| 197 | Mercia | Welsh | From Mercia. | F | |
| 198 | Meredith | Welsh | Magnificent. Great chief. Great lady. This name can be given to children of either gender, but is more common among girls. | F | |
| 199 | Meredydd | Welsh | Magnificent. | F | |
| 200 | Mererid | Welsh | Pearl. | F | |