| Name | Meaning | Gender | Origin |
|---|
| India | Body of water | Female | Sanskrit |
| Io | Pronounced: Ee-Oh | Female | Greek |
| Irving | Green water | Male | English |
| Isla | Scottish island | Female | English |
| Ivria | Hebrew woman | Female | Hebrew |
| Jafar | Stream | Male | Arabic |
| Jahnavi | | Female | Hebrew |
| Jamuna | Of Yama | Female | Sanskrit |
| Joan | God is gracious | Female | Hebrew |
| Jordan | Descend | Male | Hebrew |
| Jordana | Descend | Female | Hebrew |
| Jordane | Down Flowing. The River In Palestine Where Jesus Was Baptized Has Been Used As A Given Name Since The Crusades. | Female | English |
| Kale | Uncertain, perhaps slender | Male | Gaelic |
| Kalinda | Sun | Female | Sanskrit |
| Kaveri | Name of a holy river | Female | Sanskrit |
| Kelby | Child's town | Male | English |
| Kelvin | From the River Clyde | Male | English |
| Kemp | Battler, fighter, warrior | Male | English |
| Kendal | Valley of the River Kent | Female | Gaelic |
| Kendall | Valley of the River Kent | Female | Gaelic |
| Kenton | Royal town | Male | English |
| Kerry | Country of the children of Ciar | Female | Gaelic |
| Kyle | Church | Male | Gaelic |
| Lachlan | Warrior from the Land of the Lochs | Unisex | Gaelic |
| Laken | From The Lake | Unisex | Celtic |
| Lark | Bird | Female | English |
| Lea | Weary | Female | Hebrew |
| Leith | A harbour in Scotland | Male | Gaelic |
| Lennox | From Levenach | Male | Gaelic |
| Letha | Ladylike | Female | Greek |