| Name | Meaning | Gender | Origin |
|---|
| Keefer | Barrelmaker Variation of Cooper. Surname.
| Male | |
| Kelly | Lively: aggressive.
| Female | Irish |
| Kirby | church settlement | Male | Norse |
| Kitten | | Unisex | |
| Leland | from the meadow land | Male | English |
| Linx | | Unisex | Hebrew |
| Logan | little hollow | Male | Scottish |
| Lucy | light: illumination.
| Female | English |
| Maeve | goddess; a purple flower | Female | Irish |
| Maisie | child of light | Female | Scottish |
| Major | Army or Air Force rank above Captain but below Lieutenant Colonel | Male | Latin |
| Mama | Informal for mother. | Unisex | |
| Manx | | Male | Hebrew |
| Margaret | after Margaret Thatcher | Female | Greek |
| Margot | Variant of Margaret | Female | |
| Marion | bitter | Male | |
| Mark | warlike | Male | Latin |
| Marlowe | after Philip | Male | English |
| Marty | Of Mars The God Of War, Warlike | Unisex | English |
| Matilda | battle-mighty | Female | |
| Maurice | moorish; dark; moor land | Male | Latin |
| Maxi | Short for maximum - the greatest possible quantity | Female | |
| Maxwell | Capable
| Male | Scottish |
| Michael | who is like God | Male | Hebrew |
| Missy | Informal term for young woman | Female | English |