| Name | Meaning | Gender | Origin |
|---|
| Isane | Strong willed
| Female | |
| Isis | throne | Female | Egyptian |
| Jacinda | Beautiful
| Female | English |
| Jada | wise | Female | Spanish |
| Jade | Jewel. Courageous and adoring.
| Female | Spanish |
| Jadzia | Princess | Unisex | Polish |
| Jakinda | Hyacinth
| Female | |
| Jarrett | Irish variation of Gerard, spear strength | Male | English |
| Jasmine | Flower
| Female | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Javier | Born in January
| Male | Spanish |
| Jax | God has been gracious: has shown favor. Based on John or Jacques.
| Male | Modern |
| Jayce | Moon | Male | English |
| Jayda | Green Gemstone | Unisex | English |
| Jemma | Italian, precious stone | Female | Spelling |
| Jenesis | Creation or Beginning
| Female | |
| Jewel | Jewel
| Female | Word |
| Jillian | Jove's child. Variant of Gillian from the masculine Julian.
| Female | Phonetic |
| Jitterbug | | Male | Hebrew |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joel | God is willing, Jehova is the Lord | Male | 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 |