| Name | Meaning | Gender | Origin |
|---|
| Jaco | Hebrew, supplanter | Male | Portuguese |
| Jacobson | | Unisex | Hebrew |
| Jacquelin | French form of Jacob
| Male | |
| Jager | Carter | Unisex | English |
| Jagger | a teamster | Male | English |
| Jake | From Jacob - To fill the place of another | Male | Hebrew |
| James | From Jacob - To fill the place of another, supplanter. | Male | English |
| Jameson | son of James | Male | English |
| Jamie | Feminine of James | Female | Scottish |
| Jane | gracious, merciful, God is gracious | Female | English |
| Jason | the Lord is salvation | Male | Hebrew |
| Jay | jaybird | Male | Latin |
| Jean | God is gracious | Male | |
| Jeff | pledge of peace | Male | English |
| Jefferson | son of Jeffrey | Male | English |
| Jeremy | God will uplift, appointed by God | Male | English |
| Jerome | sacred name | Male | Greek |
| Jerry | after Jerry Garcia, The Grateful Dead | Male | English |
| Jesper | Treasure | Unisex | Danish |
| Jess | Gift | Male | English |
| Jesse | wealthy | Male | Hebrew |
| Jim | supplanter | Male | English |
| Jimmy | supplanter | Male | English |
| Joaquin | Abbreviation of the Hebrew name Jehoichin meaning Jehovah has established. Joaquin Miller the colorful 19th century poet-adventurer of the American west.
| Male | Spanish |
| Job | The Persecuted | Male | Hebrew |