| Name | Meaning | Gender | Origin |
|---|
| Ivor | yew | Male | Scottish |
| Ivory | The hard, smooth, yellowish-white of an elephant's tusk. | Male | Word |
| Jacee | Based On The Initials J.C. Or An Abbreviation Of Jacinda. | Unisex | English |
| Jackie | supplanter | Female | English |
| Jadelyn | | Unisex | Hebrew |
| Jady | The Gemstone Jade; The Color Green. | Unisex | English |
| Jagger | a teamster | Male | English |
| Jameson | son of James | Male | English |
| Jane | gracious, merciful, God is gracious | Female | English |
| Janie | Jehovah Has Been Gracious; Has Shown Favor. Variant Of Joan. | Unisex | English |
| Jarrett | Irish variation of Gerard, spear strength | Male | English |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jeeves | | Male | Hebrew |
| Jefferson | son of Jeffrey | Male | English |
| Jeffrey | pledge of peace | Male | Spelling |
| Jen | White, Fair | Unisex | English |
| Jenna | white shadow, white wave | Female | English |
| Jennifer | white shadow, white wave | Female | Cornish |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jerry | after Jerry Garcia, The Grateful Dead | Male | English |
| Jillian | Jove's child. Variant of Gillian from the masculine Julian.
| Female | Phonetic |
| Jilly | Downy Haired | Unisex | English |