| Name | Meaning | Origin | Gender |
| IAGO | Supplanter | Latin | M |
| IAIN | God is Gracious | Celtic/Gaelic | M |
| IAN | God is Gracious | Celtic/Gaelic | M |
| IANNA | Fem. form of IAN | Celtic/Gaelic | F |
| IANTHE | Violet, Colored Flower | Greek | F |
| IBTESAM | Smiling | Arabic | F |
| ICHABOD | Departed Glory | Hebrew | M |
| IDA | Hardworking | German | F |
| IDALEE | From IDA and LEE | American | F |
| IDALIA | From IDALEE | American | F |
| IDANA | From IDA & ANNA | American | F |
| IDANIA | Hardworking, Prosperous | Slavic | F |
| IDE | Thirst | Celtic/Gaelic | F |
| IDEN | Prosperous | English | E |
| IDOLA | Vision | Greek | F |
| IDRA | Fig tree | Hebrew | F |
| IDRIS | Fiery | Hindi | E |
| IFAMA | All is Well | African | F |
| IFE | Wide, Love | African | M |
| IGE | Born by Breech | African | M |
| IGGI | Only Son | African | M |
| IGGY | From the name IGGI | African | M |
| IGNATIUS | Firey One | English | M |
| IKE | From the name ISAAC | Hebrew | M |
| IKIA | God is my Salvation | Hebrew | F |
| ILANA | Great Tree | Hebrew | F |
| ILANDERE | Moon Woman | American | F |
| ILAR | Cheerful | Welsh | E |
| ILARIO | Cheerful | Italian | M |
| ILIANA | Bright | Greek | F |
| ILITHYA | Goddess of Women in Labor | Greek | F |
| ILLIAS | Jehovah is my God | Greek | M |
| ILO | Light, Joyous, Sunshine | African | M |
| ILOM | My Enemies Are Many | African | M |
| ILORI | Special Treasure | African | F |
| ILSE | Consecrated to God | German | F |
| ILYA | From Elijah | Hungarian | M |
| ILYSSA | Rational | Hebrew | F |
| IMAN | Faith | African | F |
| IMARAN | Strong | Hindi | M |
| IMOGENE | Image, Likeness | Latin | F |
| INA | Pure | Greek | F |
| INARA | Ray of light - Heaven sent | Arabic | F |
| INARI | Shrimp | Japanese | F |
| INCE | Innocent | Hungarian | M |
| INDEPENDENCE | Freedom | American | F |
| INDIA | From India | English | F |
| INDIRA | God of Heaven & Thunderstorms | Hindi | F |
| INDIVAR | Blue Lotus | Hindi | M |
| INDIYA | Philosophical one | American | F |
| INDRA | God of Rain & Thunder | Hindi | F |
| INEZ | Meek | Spanish | F |
| INFINITY | Endless | American | E |
| INGA | From the name INGRID | Scandinavian | F |
| INGE | Island | Scandinavian | F |
| INGO | Male leader | Scandinavian | M |
| INGRID | A Meadow | Scandinavian | F |
| INIGO | Ardent | Portuguese | M |
| INIKO | Born During Troubled Times | African | F |
| INOCENCIA | Innocent | Spanish | F |
| INOKE | Devoted | Hawaiian | F |
| IOKINA | God will Develop | Hawaiian | F |
| IOLA | Violet-Colored Dawn | Welsh | F |
| IOLANA | Soar Like An Eagle | Hawaiian | F |
| IOLANI | Royal Hawk | Hawaiian | F |
| ION | God is Good | Celtic/Gaelic | M |
| IONA | Purple Jewel | Greek | F |
| IORWEN | Lord, Beautiful | Welsh | F |
| IPHIGENIA | Mythological Creature | Greek | F |
| IPHIGENIE | Mythical Creature | French | F |
| IPO | Darling | Hawaiian | F |
| IRA | Watchful, Descendant | Hebrew | M |
| IRAM | Shining | Hebrew | M |
| IREN | Peace | Greek | F |
| IRENE | Peaceful | Greek | F |
| IRIA | From the name IRIS | English | F |
| IRINA | Peaceful | Slavic | F |
| IRIS | Colorful, Rainbow | Greek | F |
| IRISA | Iris | English | F |
| IRISH | From Ireland | American | E |
| IRMA | Complete one | German | F |
| IRVING | Handsome and Fair | English | M |
| ISAAC | He will laugh | Hebrew | M |
| ISABEL | Consecrated to God | Spanish | F |
| ISABELLA | Consecrated to God | Italian | F |
| ISABELLE | Consecrated to God | French | F |
| ISABIS | Something Beautiful | African | F |
| ISADORA | Gift of Isis | Latin | F |
| ISAIAH | Salvation by God | Hebrew | M |
| ISANNE | From ISABEL and ANNE | American | F |
| ISAURA | Soft Air | Greek | F |
| ISHA | Woman | Hebrew | F |
| ISHANA | Prosperous | Hindi | F |
| ISHMAEL | God Will Hear | Hebrew | M |
| ISI | Consecrated to God | Spanish | F |
| ISIS | Supreme Goddess of the moon | Egyptian | F |
| ISLA | Island | Celtic/Gaelic | F |
| ISLEEN | Form of EILEEN | Celtic/Gaelic | F |
| ISMAEL | God Will Hear | Hebrew | M |
| ISMAELA | God Listens | Hebrew | F |
| ISMAIL | God will Hear | Hebrew | M |
| ISMET | Honor | Turkish | M |
| ISOKE | Gift from God | African | F |
| ISOLDE | Fair One | Welsh | F |
| ISRA | Freedom | Turkish | E |
| ISRAEL | Prince of God | Hebrew | M |
| ISSAY | Hairy | African | M |
| ITA | Thirsty | Italian | F |
| ITALIA | Italy | Italian | F |
| IVAN | God is good | Slavic | M |
| IVANA | God is Gracious | Slavic | F |
| IVI | Ivy Plant | English | F |
| IVIE | From the name IVY | English | F |
| IVO | cut wood | German | M |
| IVORY | White as Elephant Tusks | Latin | F |
| IVRIA | From the other side of the River | Hebrew | F |
| IVRIT | The Hebrew Language | Hebrew | M |
| IVY | A Vine | English | F |
| IWALANI | Heavenly Seagull | Hawaiian | F |
| IZEFIA | I have no child | African | F |
| IZZY | He will Laugh | Hebrew | M |