| Name | Meaning | Gender | Origin |
|---|
| Jaguar | Large Spotted Feline | Male | English |
| Jay | jaybird | Male | Latin |
| Jemima | dove | Female | Hebrew |
| Jonah | Dove. In the bible Jonah was on board a ship God caused to sink: sailors traditionally use the name Jonah to personify someone who brings bad luck.
| Male | Hebrew |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kitty | Variant of Katherine. Pure.
| Female | English |
| Kodiak | Large Alaskan brown bear. | Female | Russian |
| Leander | lion man | Male | Greek |
| Lennie | Brave Lion | Unisex | English |
| Lenny | brave lion | Male | English |
| Leo | Lion.
| Male | Latin |
| Leon | lion | Male | Greek |
| Leona | Like A Lion | Female | French |
| Leonard | lion-hearted | Male | |
| Leonardo | Lion-bold. Leonardo da Vinci is considered by many to be the most brilliant and creative men who ever lived.
| Male | Italian |
| Leonid | Lion | Male | Russian |
| Lew | Refuge | Unisex | |
| Lion | Lion | Unisex | English |
| Lionel | Cousin of Lancelot
| Male | Latin |
| Loni | Latin, lioness | Female | English |
| Lovell | Little Wolf | Unisex | English |
| Lowell | Beloved | Male | |
| Lynx | | Male | |
| Mahon | Bear | Unisex | Irish |