| Name | Meaning | Gender | Origin |
|---|
| Icy | Ice-like | Unisex | English |
| Igloo | Dome shaped Eskimo house made of blocks of snow. | Unisex | English |
| Inspector | | Unisex | Hebrew |
| Irvin | Green water | Male | English |
| Irving | Green water | Male | English |
| Jack | God is gracious | Male | Hebrew |
| Jacob | Supplanter | Male | Hebrew |
| Jameson | Supplanter | Male | Hebrew |
| Jarah | One who gives sweetness | Unisex | Hebrew |
| Jasper | Treasurer | Male | Persian |
| Jay | Jay bird | Male | English |
| Jela | Father suffered during birth of son | Unisex | African |
| Jess | Variant Of Jesse Jehovah Exists. | Unisex | Literary |
| Jester | A fool at medieval courts | Unisex | English |
| Johnson | God is gracious | Male | Hebrew |
| Jordan | Descend | Male | Hebrew |
| Kaden | Companion | Male | English |
| Kami | Altar server | Male | Latin |
| Kay | Pure | Male | Greek |
| Keahi | The fire | Unisex | Hawaiian |
| Kent | Uncertain, perhaps coastal region | Male | English |
| Kenyon | Blond | Male | English |
| Kinky | | Unisex | Hebrew |
| Kishi | Beach, seashore | Unisex | Japanese |
| Kit | Bearer of Christ | Unisex | Greek |
| Klondike | | Unisex | Hebrew |
| Koda | The allies | Unisex | Native American |
| Kyran | Little dark one | Male | Gaelic |
| Laban | White | Male | Hebrew |
| Lamb | Lamb | Unisex | English |