| Name | Meaning | Gender | Origin |
|---|
| Leonardo | Lion-bold. Leonardo da Vinci is considered by many to be the most brilliant and creative men who ever lived.
| Male | Italian |
| Leonora | Light | Female | Italian |
| Lestat | | Unisex | Hebrew |
| Lexus | English variation of Alexios, defending men | Male | Greek |
| Licorice | Confection made from the licorice root. | Unisex | |
| Lightning | | Unisex | Hebrew |
| Lil | English from Latin, lily, a flower | Female | English |
| Lil | English from Latin, lily, a flower | Female | English |
| Little | | Male | Hebrew |
| Lucia | Light | Female | Italian |
| Lucie | Light | Unisex | French |
| Lucius | Light | Male | Roman |
| Lucky | Having good luck. | Male | Word |
| Maddox | Beneficient | Male | Welsh |
| Madonna | my lady | Female | Latin |
| Mafalda | Strength In Battle | Female | Italian |
| Magic | Possessing qualities that produce baffling effects | Male | Word |
| Magic | Possessing qualities that produce baffling effects | Male | Word |
| Magnus | One who is great.
| Male | Latin |
| Mahalia | affection | Female | Hebrew |
| Major | Army or Air Force rank above Captain but below Lieutenant Colonel | Male | Latin |
| Mama | Informal for mother. | Unisex | |
| Mango | after the character in Saturday Night Live | Unisex | |
| Manhattan | Whiskey | Unisex | |
| Manson | | Unisex | Hebrew |