| Name | Meaning | Gender | Origin |
|---|
| Imtithal | Polite Obedience | Female | Arabic |
| Ingall | Angel | Male | German |
| Ingalls | Angel | Male | German |
| Ingel | Angel | Male | German |
| Ingelbert | Bright Angel | Male | German |
| Ingelise | Ing's Grace | Female | Danish |
| Inglebert | "Angel-Brilliant, Unusually Intelligent." | Male | German |
| Iola | Myth Name (Sister Of Iphitus) | Female | Greek |
| Iolana | To Soar Like And Eagle Or Hawk | Female | Hawaiian |
| Iolanthe | Violet | Female | Greek |
| Ionela | Meaning Unknown | Female | Romanian |
| Iphicles | Myth Name (Hercules' Twin Brother) | Male | Greek |
| Isabel | Devoted To God | Female | Hebrew |
| Isabela | Variant Of Elizabeth. My God Is Bountiful:God Of Plenty. | Female | Spanish |
| Isabella | Meaning Unknown | Female | Arthurian |
| Isabelle | Devoted To God | Female | Hebrew |
| Isabellia Saral | Unknown | Female | English |
| Iseabail | Devoted To God | Male | Hebrew |
| Iseabal | Devoted To God | Female | Gaelic |
| Ishmael | God Listens. In The Bible Ismael Was Son Of Abraham By Sarah's Egyptian Slave Woman Hagar. | Male | Hebrew |
| Isibeal | Irish Form Of Isabel Consecrated To God | Female | Irish |
| Isleen | Vision | Female | Irish |
| Islene | Vision | Female | Irish |
| Ismael | God Listens. In The Bible Ismael Was Son Of Abraham By Sarah's Egyptian Slave Woman Hagar. | Male | Spanish |
| Ismail | A Prophet's Name; Meaning Unknown | Male | Arabic |
| Isobel | Scottish Form Of Isabel Consecrated To God | Female | Scottish |
| Isold | The Fair | Female | Celtic |
| Isolda | Rule Of Ice | Female | German |
| Isolde | Lover Of Tristan | Female | Arthurian |
| Isole | Rule Of Ice | Female | German |