| Name | M/F | Meaning |
|---|---|---|
| Iacob | ![]() |
Meaning : To Follow, To Succeed, Supplanter Used in : Hebrew, French, Irish |
| Ian | ![]() |
Meaning : God Is Gracious Used in : American, Australian, Chinese, Hebrew, Japanese, Greek, British, Danish, Dutch, English, French, German, Irish, Jamaican, Latin, Scottish, Swedish, Swiss, Australian |
| Iarbonel | ![]() |
Meaning : Descendant Of Judah Used in : Celtic, Irish |
| Iarla | ![]() |
Meaning : Tributary Lord Used in : Irish |
| Iarlaith | ![]() |
Meaning : Lord Of The West, Royalty Used in : Celtic, Irish |
| Iarlugh | ![]() |
Meaning : God Names Used in : Irish |
| Iasan | ![]() |
Meaning : Healer Used in : Irish |
| Ibor | ![]() |
Meaning : Yew Tree Used in : Celtic, Irish |
| Ighneachan | ![]() |
Meaning : Strong Man Used in : Irish |
| Ignatius | ![]() |
Meaning : Fiery One Used in : American, Australian, British, Danish, Dutch, English, French, German, Greek, Irish, Latin, Portuguese |
| Imar | ![]() |
Meaning : Archer, Bow Warrior Used in : Irish |
| Incha | ![]() |
Meaning : Allah Used in : Celtic, Irish |
| Indract | ![]() |
Meaning : Saint Name Used in : Celtic, Irish |
| Indrechtach | ![]() |
Meaning : Attacker Used in : Celtic, Irish |
| Indrechtaich | ![]() |
Meaning : Attacker Used in : Irish |
| Inerney | ![]() |
Meaning : Steward Of Church Lands Used in : Irish |
| Ingnathach | ![]() |
Meaning : Druid Of The Fir Bolg Used in : Celtic, Irish |
| Inis | ![]() |
Meaning : From The River Island Used in : Irish, Irish, Celtic |
| Iniss | ![]() |
Meaning : From The River Island Used in : Irish |
| Innes | ![]() |
Meaning : From The River Island Used in : Australian, Gaelic, Irish, Scottish, Australian |
| Innis | ![]() |
Meaning : From The River Island Used in : Australian, Gaelic, Irish, Scottish, Australian |
| Inys | ![]() |
Meaning : From The River Island Used in : Irish |
| Iobhar | ![]() |
Meaning : Yew Used in : Celtic, Irish |
| Iollan | ![]() |
Meaning : Worship, God Used in : Irish |
| Iomhar | ![]() |
Meaning : Army Warrior With Bow Used in : Irish, Teutonic |
| Ion | ![]() |
Meaning : God Is Good Used in : Australian, Celtic, French, Greek, Irish, Romanian |
| Ionatan | ![]() |
Meaning : God Has Given Used in : French, Irish |
| Ionhar | ![]() |
Meaning : Archer Used in : Irish |
| Ior | ![]() |
Meaning : Lord Used in : Celtic, Irish |
| Iosaef | ![]() |
Meaning : He Will Enlarge Used in : Irish |
| Iosef | ![]() |
Meaning : Yahweh Will Add Used in : Irish |
| Iosep | ![]() |
Meaning : Jehova Increases Used in : Hebrew, French, Irish |
| Ioseph | ![]() |
Meaning : He Will Enlarge Used in : Hebrew, British, English, Irish |
| Iosog | ![]() |
Meaning : He May Laugh Used in : Irish |
| Iosua | ![]() |
Meaning : God Is My Salvation Used in : Australian, Irish |
| Irial | ![]() |
Meaning : Elf Used in : Celtic, Irish |
| Irv | ![]() |
Meaning : Handsome Used in : Irish |
| Irvin | ![]() |
Meaning : Green Water, Boar Friend, Sea Friend Used in : American, Australian, British, Celtic, English, French, Gaelic, German, Irish, Scottish |
| Irvine | ![]() |
Meaning : Green Water, Boar Friend, Sea Friend Used in : American, Australian, French, British, English, Irish |
| Irving | ![]() |
Meaning : Green Water, Boar Friend, Sea Friend Used in : American, Australian, Chinese, British, Celtic, Danish, English, French, German, Irish, Scottish, Australian |
| Irwin | ![]() |
Meaning : Sea Friend Used in : American, Anglo, Australian, Chinese, British, English, French, German, Irish |
| Isaac | ![]() |
Meaning : Laughter Used in : American, Hawaiian, Australian, Chinese, Hebrew, Lebanese, British, Danish, Dutch, English, French, German, Irish, Jamaican, Portuguese, Swedish, Afghan, Australian |
| Issac | ![]() |
Meaning : He Will Laugh, Laughter Used in : American, Australian, Chinese, Hebrew, Dutch, French, Irish |
| Iucharba | ![]() |
Meaning : A Brian mac Tuirenn, who killed Lugh's father Cian. Used in : Celtic, Irish |
| Iud | ![]() |
Meaning : Prince Used in : Irish |
| Iuil | ![]() |
Meaning : Youthful, Vivacious Used in : Irish |
| Iver | ![]() |
Meaning : Yew, Yew, Born Army Used in : Australian, British, Danish, English, French, German, Irish, Norse, Scandinavian, Scottish, Swedish, Teutonic |
| Ivor | ![]() |
Meaning : Yew, Bow Army Used in : American, Australian, British, English, German, Irish, Norse, Scandinavian |