| Name | Meaning | Gender | Origin |
| Ighneachan | Variant of Eigneachan: Strong man. | M | Irish |
| Ignac | Ardent. | M | Latin |
| Ignace | Fiery. | M | French |
| Ignacia | Fiery. | F | Latin |
| Ignacio | Fiery. | M | Italian |
| Ignado | Fire. | M | Spanish |
| Ignatius | Firey One | M | English |
| Ignazio | Fiery. | M | Italian |
| Igone | Refers to Christ's Ascension. | F | Basque |
| Igor | Warrior of peace. Ing's warrior (Ing was the Norse god of peace and fertility). From the Scandinavian name Ingyar. Famous Bearer: Russian composer Igor Stravinsky. | M | Russian |
| Igorr | Farmer. | M | Greek |
| Igoryok | Farmer. | M | Russian |
| Igraine | Mother of Arthur. | F | Arthurian Legend |
| Igrayne | In Arthurian legend Igrayne is mother of Arthur. | F | Arthurian Legend |
| Ihsaan | Variant of Ihsan: Benevolence. Beneficence. Charity. | M | Muslim |
| Ihsan | compassionate | M | Turkish |
| Ihtishaam | Variant of Ihtisham: Pomp. Magnificence. | M | Muslim |
| Ihtisham | Pomp. Magnificence. | M | Muslim |
| Iim | Heaps of Hebrews; or of angry men | M | Biblical |
| Ike | From the name ISAAC | M | Hebrew |
| Iker | Visits. | M | Basque |
| Ikerne | Visitation. | F | Spanish |
| Ikhlaaq | Variant of Ikhlaq: Morals. Virtues. | M | Muslim |
| Ikhlaas | Variant of Ikhlas: Frankness. Sincerity. | M | Muslim |
| Ikhlaq | Morals. Virtues. | M | Muslim |
| Ikhlas | Frankness. Sincerity. | M | Muslim |
| Ikia | God is my Salvation | F | Hebrew |
| Ikkesh | Forward/ wicked. | M | Biblical |
| Ikla | Flattering. | F | Slavic |
| Ikraam | Variant of Ikram: Esteem Veneration. | M | Muslim |
| Ikram | Honor. Hospitality. Generosity. | F | Muslim |
| Ikrimah | Female of a pigeon. | M | Muslim |
| Ila | From the island. | F | French |
| Ilan | Variant of Elan: Tree. | M | Hebrew |
| Ilana | Great Tree | F | Hebrew |
| Ilandere | Moon Woman | F | American |
| Ilane | Island. | F | Irish |
| Ilanit | Tree. | F | Hebrew |
| Ilar | Cheerful | E | Welsh |
| Ilari | Cheerful. | M | Latin |
| Ilario | Cheerful | M | Italian |
| Ilarion | Cheerful. | M | Latin |
| Ilay | Light. | F | Greek |
| Ilda | Heroine. | F | Teutonic |
| Ilde | Battle. | F | English |
| Ildiko | Warrior. | F | Teutonic |
| Ileana | From Troy. | F | Greek |
| Ileanna | Variant of Elena. | F | Spanish |
| Ilena | Variant of Eileen. | F | English |
| Ilene | Variant of Eileen. | F | English |