| Name | Meaning | Gender | Origin |
|---|
| Leonard | Strong as the lion | Male | Germanic |
| Leonel | Lion | Male | Latin |
| Leroy | The king | Male | French |
| Lester | From Leicester | Male | English |
| Lew | Fame and war | Male | Germanic |
| Lewis | Fame and war | Male | Germanic |
| Lincoln | Lake settlement, lake colony | Male | English |
| Llewellyn | Luminescent | Male | Welsh |
| Lorimer | Saddle Maker | Male | English |
| Louis | Fame and war | Male | Germanic |
| Lucio | Light | Male | Latin |
| Lyle | Island | Male | French |
| Lyman | Clearing, meadow | Male | English |
| Malcolm | Columba's servant | Male | Gaelic |
| Marcus | From the god Mars | Male | Latin |
| Mark | From the god Mars | Male | Latin |
| Marshall | Horse servant | Male | Germanic |
| Martin | From the god Mars | Male | Latin |
| Marvin | Uncertain, possibly eminent marrow | Male | Welsh |
| Maurice | Moor | Male | Latin |
| Max | Little Maximus | Male | Latin |
| Melvin | Uncertain, possibly bad town | Male | English |
| Mervyn | Uncertain, possibly eminent marrow | Male | Welsh |
| Michel | Who is like God? | Male | Hebrew |
| Mikhail | Who resembles God? | Male | Hebrew |
| Miles | Uncertain, perhaps peaceful | Male | Germanic |
| Millard | Guardian of the mill | Male | English |
| Mills | Mills | Unisex | English |
| Milton | Settlement by the mill | Male | English |
| Mohandas | Devoted to Krishna | Unisex | Sanskrit |