| Name | Meaning | Gender | Origin |
|---|
| Katie | Pure | Female | Greek |
| Kayla | Who is like God? | Female | Hebrew |
| Kaylee | Descendant of Caollaidhe | Female | Gaelic |
| Kelsey | Cenel's land | Unisex | English |
| Kiara | Clear | Female | Latin |
| Killer | | Unisex | Hebrew |
| Kira | Dark | Female | Gaelic |
| Koko | The second child | Female | African |
| Lacey | Lacy | Female | English |
| Lady | Lady | Unisex | English |
| Lenny | Brave lion | Unisex | German |
| Lexi | Defending men | Female | Greek |
| Lilly | Lily | Female | English |
| Lily | Lily | Female | English |
| Lola | Sorrows | Female | Spanish |
| Lucky | Fortunate | Unisex | English |
| Lucy | Light | Female | Latin |
| Maddie | Pet form of Mad- names | Unisex | English |
| Madison | Son of Maud | Unisex | English |
| Maggie | Pearl | Female | Greek |
| Magic | Possessing qualities that produce baffling effects | Unisex | English |
| Maisy | Pearl. Variant Of Margaret. | Unisex | English |
| Malibu | Noisy Surf | Unisex | Native American |
| Mandy | She who must be loved | Female | Latin |
| Marla | Of Magdala | Female | Hebrew |
| Maxie | Pet form of names starting with Max | Unisex | English |
| Meg | Pearl | Female | Greek |
| Midnight | Intense darkness, the middle of the night | Unisex | English |
| Minnie | Will, desire + helmet, protection | Female | Germanic |
| Missy | Bee | Female | Greek |