| Name | Meaning | Gender | Origin |
|---|
| Hubertus | | Unisex | Hebrew |
| Hugo | Intelligent
| Male | Latinized |
| Irene | Peace
| Female | Greek |
| Iris | rainbow, a play of colours | Female | |
| Isa | strong-willed | Female | |
| Isabel | concecrated to God | Female | Spanish |
| Isis | throne | Female | Egyptian |
| Issac | laughter | Male | Hebrew |
| Jacob | The supplanter, held by the heel | Male | Hebrew |
| Jade | Jewel. Courageous and adoring.
| Female | Spanish |
| Jakob | Supplanter, Representative | Unisex | German |
| Jansen | Variant Of The Hebrew John Jehovah Has Been Gracious; Has Shown Favor. | Unisex | German |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jasper | Black stone
| Male | Persian |
| Jen | White, Fair | Unisex | English |
| Jennifer | white shadow, white wave | Female | Cornish |
| Jeremias | Exalted of the Lord
| Male | |
| Jesse | wealthy | Male | Hebrew |
| Jonathan | God gives | Male | Hebrew |
| Joris | Dutch for George | Unisex | |
| Julia | Youthful
| Female | Latin |
| Julie | Youthful: Jove's child. A feminine of Julian.
| Female | |
| Juliette | youthful | Female | |
| Jurgen | German form of George
| Male | |