| Ingrid | Meadow | Female |
| Iolanthe | Violet | Female |
| Ione | From The King's Island | Female |
| Iris | Rainbow | Female |
| Ivy | Ivy | Female |
| Jacinto | Hyacinth | Male |
| Jack | Replace (Derivative Of James) | Male |
| Jade | Jewel. Courageous And Adoring. | Female |
| Jarek | January | Male |
| Jaroslav | Myth Name | Male |
| Jasmine | Flower | Female |
| Javier | Bright. Variant Of Xavier. | Male |
| Jolan | Countiy | Female |
| Joseph | God Will Multiply | Male |
| Joy | Jewel: Rejoicing. | Female |
| Kalei | The Flower Wreath; The Beloved | Female |
| Kalina | Flower | Female |
| Karma | "Actions Are Fate." | Female |
| Keiko | Adored One | Female |
| Kelby | Dark: Dark-Haired. | Male |
| Khloe | Variant Of Chloe | Female |
| Kingswell | Lives At The King's Spring | Male |
| Kisha | Abbreviation Of Lakeisha. Great Joy. | Female |
| Lathrop | Meaning Unknown | Male |
| Laura | Laurel | Female |