| Baby Name | Meaning | Gender |
|---|
| Irena | Peace | Female |
| Irene | Peace | Female |
| Iris | Rainbow | Female |
| Irmigard | War Goddess | Female |
| Isabeau | Variant Of Elizabeth. My God Is Bountiful:God Of Plenty. | Female |
| Isabel | Devoted To God | Female |
| Isabelle | Devoted To God | Female |
| Isolda | Rule Of Ice | Female |
| Isolde | Lover Of Tristan | Female |
| Jack | Replace (Derivative Of James) | Male |
| Jackie | God Has Been Gracious: Has Shown Favor. Based On John Or Jacques. Used More For Girls Than Boys. | Male |
| Jacky | God Has Been Gracious: Has Shown Favor. Based On John Or Jacques. | Male |
| Jacoba | Supplanter | Female |
| Jacqueline | Feminine Form Of Jacques (Supplanter) | Female |
| Jacquelynne | Feminine Of Jacques Derived From James And Jacob. | Female |
| Jacquenette | Little Jacques | Female |
| Jacques | French Form Of Jacob (Supplanter) | Male |
| Jade | Jewel. Courageous And Adoring. | Female |
| Jakobe | Feminine Form Of Jakoh | Female |
| Jan | Dutch Form Of John, "The Lord Is Gracious." | Male |
| Jana | God's Gift | Female |
| Jane | Gift From God | Female |
| Janine | Gift From God | Female |
| Janne | Finnish Form Of John | Male |
| Jansen | Variant Of The Hebrew John Jehovah Has Been Gracious: Has Shown Favor. | Male |