| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
| Iacopo | Jacob/Jacqueline/Jakoba | Hebrew | Italian | Yahweh may protect; holder of the heel; supplanter | |
| Iago | Jacob/Jacqueline/Jakoba | Hebrew | Portuguese | Yahweh may protect; holder of the heel; supplanter | |
| Iain | John/Johanna | Hebrew | Scottish | Yahweh is gracious | |
| Ian | John/Johanna | Hebrew | English, Scottish | Yahweh is gracious | #81 |
| Ian Mateo | Ian Mateo | Spanish | Spanish | | |
| Ibai | Ibai | Basque | Spanish, Basque | river | |
| Ibish | Ibish | Unknown | Albanian | | |
| Ibraheem | Abraham | Hebrew | Indian | father of many | |
| Ibrahim | Abraham | Hebrew | Arabic | father of many | #455 |
| Ibrahim | Abraham | Hebrew | Turkish | father of many | |
| Ibrahima | Abraham | Hebrew | Arabic | father of many | |
| Ícaro | Ícaro | Old Greek | Portuguese | | |
| Icarus | Ícaro | Old Greek | English, Latin | | |
| Idris | Idris | Arabic | Arabic | Words: study | #856 |
| Idriss | Idris | Arabic | Arabic | Words: study | |
| Idriz | Idriz | Turkish | Albanian | | |
| Iefan | John/Johanna | Hebrew | Irish | Yahweh is gracious | |
| Iggy | Ignaz/Ignatia | Etrusk | Spanish | Words: fire | |
| Igme | Igme | Unknown | Tagalog | | |
| Ignace | Ignaz/Ignatia | Etrusk | French | Words: fire | |
| Ignacio | Ignaz/Ignatia | Etrusk | Spanish | Words: fire | #981 |
| Ignacy | Ignaz/Ignatia | Etrusk | Polish | Words: fire | |
| Ignas | Ignaz/Ignatia | Etrusk | Lithuanian | Words: fire | |
| Ignatz | Ignaz/Ignatia | Etrusk | German | Words: fire | |
| Ignaz | Ignaz/Ignatia | Etrusk | German | Words: fire | |
| Ignazio | Ignaz/Ignatia | Etrusk | Spanish, Italian | Words: fire | |
| Igor | Ingvar | Old Norse | German, Russian | Words: warrior | |
| Iivo | Iivo | Unknown | Finnish | | |
| Ijob | Job | Hebrew | German | persecuted, hated | |
| Ikarus | Ícaro | Old Greek | German | | |
| Ike | Isaac | Hebrew | English | he laughs | |
| Iker | Iker | Basque | Spanish, Basque | visitation | #481 |
| Ilai | Ilai | Hebrew | English, Hebrew | Exalted | |
| Ilan | Ilan/Ilana | Hebrew | Hebrew | tree | |
| Ilari | Hilarius/Hilaria | Latin | Russian, Finnish | the cheerful | |
| Ilario | Hilarius/Hilaria | Latin | Italian | the cheerful | |
| Ilay | Ilai | Hebrew | English, Hebrew | Exalted | |
| Ilgar | Ilgar | Unknown | Russian, Azerbaijani | | |
| Ilhan | Ilhan | Unknown | Turkish | ruler | |
| Ilia | Elijah/Eliane | Hebrew | Georgian | my god is Yahweh | |
| Ilian | Ilian | Unknown | Arabic | | |
| Ilias | Elijah/Eliane | Hebrew | Arabic | my god is Yahweh | |
| Ilies | Elijah/Eliane | Hebrew | Arabic | my god is Yahweh | |
| Ilija | Elijah/Eliane | Hebrew | Slavic | my god is Yahweh | |
| Ilir | Ilir | Albanian | Albanian | Words: be free / star | |
| Ilja | Elijah/Eliane | Hebrew | Russian | my god is Yahweh | |
| Ilmari | Ilmarinen | Finnish | Finnish | Words: air | |
| Ilmarinen | Ilmarinen | Finnish | Finnish | Words: air | |
| Ilya | Elijah/Eliane | Hebrew | Russian | my god is Yahweh | |
| Ilyan | Ilyan | Unknown | French | | |
| Ilyas | Elijah/Eliane | Hebrew | Arabic | my god is Yahweh | |
| Ilyes | Elijah/Eliane | Hebrew | Arabic | my god is Yahweh | |
| Imad | Imad | Arabic | Arabic | support, pillar | |
| Iman | Iman | Arabic | Arabic | faith | |
| Imanol | Manuel/Manuela | Hebrew | Basque | God is with us | |
| Imants | Imants | Unknown | Latvian | | |
| Imer | Imer | Unknown | Albanian | | |
| Imko | Imko/Imke | Frisian | German, Frisian | Words: universal | |
| Immanuel | Manuel/Manuela | Hebrew | German | God is with us | |
| Imraan | Imran | Unknown | Arabic | | |
| Imran | Imran | Unknown | Arabic | | |
| Imre | Emmerich | Old High German | Hungarian | Words: brave / rich, powerful, power | |
| Imronbek | Imran | Unknown | Uzbek | | |
| Iñaki | Ignaz/Ignatia | Etrusk | Spanish, Basque | Words: fire | |
| Indera | Indra | Sanskrit | Malay | Words: drop / possessing | |
| Indiana | Indiana/Indiana | English | English | | |
| Indigo | Indigo/Indigo | English | English | Indigo | |
| Indra | Indra | Sanskrit | Malay, Hindi | Words: drop / possessing | |
| Indrit | Indrit | Albanian | Albanian | | |
| Indro | Indro | Unknown | Italian | | |
| Indy | Indiana/Indiana | English | English | | |
| Infant | Baby/Baby | English | English | | |
| Ing | Ingwio | Germanic | Old English, Old Norse, Germanic | | |
| Ingar | Ingmar | Old High German | Scandinavian | Words: famous, well-known | |
| Ingbert | Ingbert | Old High German | German | Words: bright | |
| Ingebert | Ingbert | Old High German | Scandinavian | Words: bright | |
| Ingemar | Ingmar | Old High German | Scandinavian | Words: famous, well-known | |
| Ingmar | Ingmar | Old High German | German, Scandinavian | Words: famous, well-known | |
| Ingo | Ingo/Inge | Old High German | German | | |
| Ingolf | Ingolf | Old High German | German | Words: wolf | |
| Ingomar | Ingmar | Old High German | German | Words: famous, well-known | |
| Ingvar | Ingvar | Old Norse | Scandinavian | Words: warrior | |
| Ingvi | Ingwio | Germanic | Old Icelandic, Old Norse | | |
| Ingwaz | Ingwio | Germanic | Germanic | | |
| Ingwio | Ingwio | Germanic | Germanic | | |
| Inigo | Ignaz/Ignatia | Etrusk | English | Words: fire | |
| Iñigo | Ignaz/Ignatia | Etrusk | Spanish | Words: fire | |
| Inko | Ingo/Inge | Old High German | Frisian | | |
| Innes | Aonghus | Old Irish | Scottish | Words: one / vigor, strength | |
| Innocenzo | Innozenz/Innozentia | Latin | Italian | | |
| Innokenti | Innozenz/Innozentia | Latin | Russian | | |
| Innozenz | Innozenz/Innozentia | Latin | German | | |
| Inocencio | Innozenz/Innozentia | Latin | Spanish | | |
| Inuik | Inuik | Greenlandic | Greenlandic | genuine human being | |
| Inuk | Inuk | Greenlandic | Greenlandic | human being | |
| Inunnguaq | Inunnguaq | Greenlandic | Greenlandic | sweet little person | |
| Ioan | John/Johanna | Hebrew | Romanian | Yahweh is gracious | |
| Ioane | John/Johanna | Hebrew | Georgian | Yahweh is gracious | |
| Ioánnis | John/Johanna | Hebrew | Greek | Yahweh is gracious | |
| Ion | John/Johanna | Hebrew | Romanian | Yahweh is gracious | |