| Name | Meaning | Gender | Origin |
|---|
| Marilyn | bitter | Female | English |
| Marina | sea maiden | Female | Latin |
| Mario | bitter, king-ruler | Male | Italian |
| Marissa | of the sea | Female | English |
| Mark | warlike | Male | Latin |
| Marlene | child of light, bitter | Female | |
| Marley | From the lake in the meadow | Female | English |
| Marley | From the lake in the meadow | Female | English |
| Marlon | little hawk | Male | English |
| Marshall | Man who looks after a nobleman's estate, keeper of the horses; steward | Male | |
| Martha | a lady | Female | Aramaic |
| Martin | Warlike person. | Male | Latin |
| Marvin | beautiful sea; good friend | Male | Welsh |
| Mary | bitter | Female | Hebrew |
| Mason | Worker in stone. | Male | English |
| Matilda | battle-mighty | Female | |
| Matteo | Variant of Matthew. Gift of God.
| Male | Italian |
| Matthew | Gift of the Lord | Male | Hebrew |
| Mattie | Mighty In Battle | Unisex | German |
| Maurice | moorish; dark; moor land | Male | Latin |
| Maverick | One that dissents from the group. | Male | American |
| Max | Large spring | Male | English |
| Max | Large spring | Male | English |
| Maximilian | greatest | Male | Latin |
| Maximo | The Greatest | Male | Spanish |