| Name | Meaning | Gender | Origin |
|---|
| Janae | Modern Name Based On Jane Or Jean Or Janai Meaning God Has Answered. | Female | English |
| January | First month of the year | Female | English |
| Jax | Jack's son | Unisex | English |
| Jayda | Precious green stone | Female | English |
| Jayde | Precious green stone | Female | English |
| Jenaya | Modern Name Based On Jane Or Jean: Based On Janai Meaning God Has Answered. | Female | English |
| Jet | Black gemstone | Unisex | English |
| Jetta | Jet-black gemstone | Female | English |
| Jewel | Precious stone | Female | English |
| Jewell | Precious stone | Female | English |
| Journey | A journey | Female | English |
| Joy | Joy | Female | English |
| Julisa | Downy Haired Consecration To God | Female | English |
| Julisha | To Make Known | Female | African |
| Julissa | | Female | Hebrew |
| June | The sixth month of the year | Female | English |
| Kaelyn | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kaydence | Rhythm | Female | English |
| Kayleen | Variant Of Kay And Kayla Keeper Of The Keys: Pure. | Female | English |
| Kaylynn | Variant Of Kay And Kayla. Keeper Of The Keys: Pure. | Female | English |
| Kelli | War | Female | English |
| Kelsey | Cenel's land | Unisex | English |
| Kelsi | Chalk landing place | Female | English |
| Kelsie | Chalk landing place | Female | English |
| Kenia | The country of Kenya | Female | English |
| Kenya | The country of Kenya | Female | English |
| Kia | Pet form of Kiana | Female | English |
| Kimberlee | Variable prefix + forest clearing | Female | English |
| Kimberley | Variable prefix + forest clearing | Unisex | English |
| Kimberly | Variable prefix + forest clearing | Unisex | English |