| Name | Meaning | Gender | Origin |
|---|
| Jess | Gift | Male | English |
| Jesse | wealthy | Male | Hebrew |
| Jessica | God's grace | Female | Hebrew |
| Jessie | wealthy | Female | Anglicized |
| Jet | A deep black colour. Aircraft engine that propels an aircraft forward by expelling exhaust gases toward the rear. | Male | Mineral |
| Jewel | Jewel
| Female | Word |
| Jill | youthful | Female | English |
| Jinx | Charm, Spell | Female | Latin |
| Jinxy | | Female | Hebrew |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joey | Abbreviation of Joseph.
| Male | |
| Joey | Abbreviation of Joseph.
| Male | |
| Jojo | | Female | Hebrew |
| Joker | | Male | Hebrew |
| Jordan | The descending river, to flow | Male | Hebrew |
| Joseph | God will increase | Male | Hebrew |
| Josh | God Saves | Unisex | English |
| Josie | From Josephine - She shall add. | Female | English |
| Journey | Journey | Female | English |
| Judy | Hebrew, He will be praised, woman from Judea | Female | English |
| Jules | youthful; soft, downy | Male | |
| Juliette | youthful | Female | |
| Junior | Youthful person. Used to distinguish son from father where they have the same name | Male | Latin |
| Jupiter | Zeus, Father | Male | Roman |