| Name | Meaning | Gender | Origin |
|---|
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jeremy | God will uplift, appointed by God | Male | English |
| 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 |
| Joanna | after the character in The Rescuers Down Under cartoon | Female | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| Joe | Abbreviation of Joseph.
| Male | English |
| John | God is merciful | Male | Hebrew |
| Johnny | the Lord is gracious | Male | English |
| Jojo | | Female | Hebrew |
| Jo-Jo | | Unisex | Hebrew |
| Jonathon | gift of Jehovah | Male | Spelling |
| Judy | Hebrew, He will be praised, woman from Judea | Female | English |
| Julia | Youthful
| Female | Latin |
| Julian | Jove's child. Form of Julius and family clan name of several powerful Roman emperors. Biblical Roman centurion Julius saved Paul's life during a hazardous voyage
| Male | English |
| Kate | Pure | Female | English |
| Kevin | handsome | Male | Irish |
| Kite | | Unisex | Hebrew |
| Klaus | Scandinavian and German variation of Nicolas | Male | |
| Lane | narrow road | Male | English |
| Layla | night | Female | Arabic |
| Layla | night | Female | Arabic |
| Lee | Healer
| Male | English |
| Lennon | small cloak or cape | Male | Irish |
| Lenny | brave lion | Male | English |