| Name | Meaning | Gender | Origin |
|---|
| Madonna | my lady | Female | Latin |
| Mal | Chief
| Male | |
| Marilyn | bitter | Female | English |
| Marlo | Bitter | Female | American |
| Marlon | little hawk | Male | English |
| Mason | Worker in stone. | Male | English |
| Massey | | Male | |
| Matthew | Gift of the Lord | Male | Hebrew |
| Maude | battle-mighty | Female | English |
| Maverick | One that dissents from the group. | Male | American |
| Mavrick | Independent, Avoids Conformity | Unisex | English |
| Maxwell | Capable
| Male | Scottish |
| Meadow | Meadow | Female | English |
| Melinda | Blend of Melissa and Linda.
| Female | English |
| Memphis | City Of Moph | Male | Hebrew |
| Mercury | Trade God | Male | Latin |
| Mercy | compassion, pity | Female | English |
| Midori | green | Female | Japanese |
| Miles | of smiles | Male | Latin |
| Milo | Merciful.
| Male | Latinized |
| Milo | Merciful.
| Male | Latinized |
| Mingus | tenants of a manor | Male | Scottish |
| Missy | Informal term for young woman | Female | English |
| Monroe | mouth of the Roe River; wheelwright | Female | Scottish |
| Monroe | mouth of the Roe River; wheelwright | Female | Scottish |