| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
|---|
| Ionut | John/Johanna | Hebrew | Romanian | Yahweh is gracious | |
| Iouri | Georg/Georgia | Old Greek | Russian | farmer, earthworker | |
| Ippokratis | Hippokrates | Old Greek | Greek | horse power | |
| Ippolito | Hippolyt/Hippolyta | Old Greek | Italian | Words: horse | |
| Ira | Ira | Hebrew | German, English | watchful | #808 |
| Irenäus | Irenäus | Old Greek | German | the peaceful | |
| Irfan | Irfan | Arabic | Arabic | knowledge | |
| Irvin | Erwin | Old High German | English | Words: army, warrior / friend | |
| Irving | Irving | Celtic | English, Scottish | green river | |
| Irwin | Erwin | Old High German | English | Words: army, warrior / friend | |
| Isa | Isa | Unknown | Scandinavian | | |
| Isaac | Isaac | Hebrew | English | he laughs | #40 |
| Isaak | Isaac | Hebrew | German | he laughs | |
| Isac | Isaac | Hebrew | Scandinavian | he laughs | |
| Isacco | Isaac | Hebrew | Italian | he laughs | |
| Isachar | Isachar | Hebrew | German | | |
| Isael | Isael | Unknown | English | | |
| Isagani | Isagani | Tagalog | Tagalog | maybe bountiful harvest | |
| Isai | Jesse | Hebrew | English | maybe gift | |
| Isaia | Isaiah | Hebrew | Italian | Yahweh is salvation | |
| Isaiah | Isaiah | Hebrew | English, Hebrew | Yahweh is salvation | #56 |
| Isaias | Isaiah | Hebrew | English | Yahweh is salvation | #489 |
| Isaías | Isaiah | Hebrew | Portuguese, Spanish | Yahweh is salvation | |
| Isak | Isaac | Hebrew | Scandinavian | he laughs | |
| Ísak | Isaac | Hebrew | Icelandic | he laughs | |
| Isamu | Isamu | Japanese | Kanji symbol, Japanese | courage, bravery | |
| Isaque | Isaac | Hebrew | Portuguese | he laughs | |
| Isebrand | Isebrand | Old High German | German | Words: iron / burning, sword | |
| Isenbert | Isenbert | Old High German | German | Words: iron / bright | |
| Ishaan | Ishaan | Sanskrit | Hindi | | #856 |
| Ishak | Isaac | Hebrew | Malay | he laughs | |
| Ishan | Ishaan | Sanskrit | Hindi | | |
| Ishmael | Ishmael | Hebrew | English | God hears | |
| Isiah | Isaiah | Hebrew | English | Yahweh is salvation | |
| Isidor | Isidore/Isidora | Old Greek | German | gift of Isis | |
| Isidore | Isidore/Isidora | Old Greek | French, English | gift of Isis | |
| Isidoro | Isidore/Isidora | Old Greek | Italian | gift of Isis | |
| Isidro | Isidore/Isidora | Old Greek | Spanish | gift of Isis | |
| Isko | Isko/Iska | Spanish | Tagalog | | |
| Islay | Islay/Isla | Scottish | Scottish | | |
| Ismael | Ishmael | Hebrew | German, Spanish | God hears | #351 |
| Ismaël | Ishmael | Hebrew | French | God hears | |
| Ismaele | Ishmael | Hebrew | Italian | God hears | |
| Ismail | Ishmael | Hebrew | Arabic | God hears | |
| Ismail | Ishmael | Hebrew | Turkish | God hears | |
| Ismet | Ismet | Turkish | Turkish | maybe honor | |
| Isni | Isni | Unknown | Albanian | | |
| Isnin | Senin | Arabic | Malay | Monday | |
| Israel | Israel | Hebrew | English | God contends, God rules | #234 |
| Issa | Joshua/Jesusa | Hebrew | Arabic | Yahweh is salvation | |
| Issac | Isaac | Hebrew | English | he laughs | #656 |
| Issachar | Isachar | Hebrew | English | | |
| Issam | Issam | Arabic | Arabic | maybe safeguard | |
| István | Steven/Stephanie | Old Greek | Hungarian | the crowned | |
| Isuf | Joseph/Josepha | Hebrew | Albanian | He (God) will add | |
| Italo | Italo/Itala | Latin | Italian | | |
| Iti | Iti | Old Greek | Italian | | |
| Itsuki | Itsuki | Japanese | Kanji symbol, Japanese | tree | |
| Iulian | Julian/Juliana | Latin | Romanian | | |
| Iuri | Georg/Georgia | Old Greek | Portuguese | farmer, earthworker | |
| Ivaan | Ivaan | Unknown | Hindi | | |
| Ivaaq | Ivaaq/Ivaana | Greenlandic | Greenlandic | brooded egg | |
| Ivailo | Ivailo/Ivaila | Unknown | Bulgarian | | |
| Ivan | John/Johanna | Hebrew | Russian | Yahweh is gracious | |
| Ivan | John/Johanna | Hebrew | English | Yahweh is gracious | #168 |
| Iván | John/Johanna | Hebrew | Spanish | Yahweh is gracious | |
| Ivano | John/Johanna | Hebrew | Italian | Yahweh is gracious | |
| Ivar | Ingvar | Old Norse | Scandinavian | Words: warrior | |
| Iven | Ivo/Yvonne | Old High German | Breton | maybe the archer | |
| Iver | Ingvar | Old Norse | Scandinavian | Words: warrior | |
| Ivica | Ivica | Slavic | Slavic | | |
| Ivo | Ivo/Yvonne | Old High German | German | maybe the archer | |
| Ivor | Ingvar | Old Norse | English | Words: warrior | |
| Iwan | John/Johanna | Hebrew | Russian | Yahweh is gracious | |
| Iwen | Ivo/Yvonne | Old High German | Breton | maybe the archer | |
| Iyad | Iyad | Arabic | Arabic | maybe support, reinforcement | |
| Izaak | Isaac | Hebrew | Polish, Maltese | he laughs | |
| Izael | Isael | Unknown | English | | |
| Izaiah | Isaiah | Hebrew | English | Yahweh is salvation | #555 |
| Izak | Isaac | Hebrew | Slovenian | he laughs | |
| Izan | Izan | Basque | Spanish, Basque | to be | |
| Izayah | Isaiah | Hebrew | English | Yahweh is salvation | |
| Izet | Izzat/Izzati | Arabic | Slavic | respect, honor, prestige | |
| Izydor | Isidore/Isidora | Old Greek | Polish | gift of Isis | |
| Izz | Izz | Arabic | Arabic | glory, power | |
| Izzat | Izzat/Izzati | Arabic | Malay | respect, honor, prestige | |
| Izzet | Izzat/Izzati | Arabic | Turkish | respect, honor, prestige | |
