This is a list of the most common male names starting with the letter I, based on people currently estimated to be alive in the United States as of 2021.
| Name | People | Average Age |
|---|---|---|
| Isaac | 276,128 | 18.1 |
| Ian | 232,866 | 22.2 |
| Isaiah | 225,165 | 14.9 |
| Ivan | 115,517 | 24.3 |
| Israel | 60,056 | 22.2 |
| Ismael | 36,091 | 24.7 |
| Ira | 23,691 | 50.8 |
| Issac | 20,729 | 22.0 |
| Isiah | 19,190 | 26.0 |
| Irvin | 17,632 | 43.4 |
| Iker | 15,389 | 6.0 |
| Isaias | 15,189 | 16.7 |
| Ignacio | 14,848 | 32.6 |
| Ibrahim | 14,320 | 12.4 |
| Izaiah | 12,805 | 10.8 |
| Irving | 12,672 | 45.0 |
| Isidro | 6,540 | 32.4 |
| Isai | 6,501 | 15.4 |
| Immanuel | 5,359 | 14.9 |
| Ishmael | 5,265 | 22.9 |
| Ivory | 5,094 | 31.7 |
| Irwin | 4,655 | 58.2 |
| Ishaan | 4,385 | 8.4 |
| Infant | 4,039 | 25.9 |
| Isaak | 3,995 | 14.3 |
| Izayah | 3,839 | 10.6 |
| Isreal | 3,635 | 28.8 |
| Idris | 3,571 | 13.7 |
| Imran | 3,569 | 14.1 |
| Ike | 3,467 | 38.8 |
| Ismail | 3,346 | 15.3 |
| Iain | 2,749 | 21.8 |
| Ilan | 2,675 | 15.1 |
| Isac | 2,660 | 19.1 |
| Izaak | 2,635 | 15.5 |
| Izaac | 2,610 | 12.7 |
| Ishan | 2,405 | 11.9 |
| Isa | 2,328 | 17.9 |
| Isael | 2,283 | 12.6 |
| Issa | 1,839 | 14.8 |
| Isacc | 1,835 | 21.2 |
| Izak | 1,709 | 14.6 |
| Ignatius | 1,631 | 29.6 |
| Ilyas | 1,549 | 8.6 |
| Ivy | 1,458 | 17.7 |
| Iverson | 1,396 | 13.7 |
| Ibraheem | 1,377 | 12.7 |
| Isaih | 1,333 | 20.3 |
| Issiah | 1,317 | 19.4 |
| Ioannis | 1,254 | 23.3 |
| Iziah | 1,216 | 14.4 |
| Iran | 1,198 | 31.2 |
| Imanol | 1,186 | 15.6 |
| Imani | 1,184 | 16.9 |
| Indiana | 1,162 | 10.9 |
| Iman | 1,146 | 18.8 |
| Isadore | 1,125 | 48.4 |
| Izaya | 996 | 13.0 |
| Isak | 988 | 15.1 |
| Izrael | 964 | 9.0 |
| Isabel | 962 | 23.4 |
| Ikaika | 950 | 20.0 |
| Imari | 944 | 18.1 |
| Ibrahima | 924 | 12.6 |
| Izan | 883 | 3.7 |
| Isidoro | 880 | 42.8 |
| Ibn | 872 | 26.9 |
| Ilya | 832 | 12.6 |
| Ilias | 828 | 10.9 |
| Iram | 798 | 17.3 |
| Indigo | 777 | 10.5 |
| Ivey | 761 | 28.0 |
| Iver | 755 | 21.3 |
| Ivaan | 754 | 2.7 |
| Izac | 735 | 14.8 |
| Igor | 726 | 22.2 |
| Isayah | 726 | 13.1 |
| Iven | 689 | 29.4 |
| Itzae | 662 | 4.0 |
| Ikenna | 648 | 18.7 |
| Izik | 636 | 12.6 |
| Ivar | 633 | 17.8 |
| Isaiha | 631 | 18.0 |
| Izael | 625 | 7.3 |
| Isidore | 596 | 41.0 |
| Irfan | 586 | 20.5 |
| Islam | 583 | 20.1 |
| Isom | 575 | 47.7 |
| Indy | 557 | 8.0 |
| Ishaq | 541 | 10.5 |
| Isrrael | 534 | 21.2 |
| Iban | 512 | 23.7 |
| Ihsan | 510 | 12.7 |
| Imad | 503 | 19.6 |
| Ilijah | 499 | 10.7 |
| Iann | 499 | 10.4 |
| Ikechukwu | 492 | 20.2 |
| Izell | 486 | 45.0 |
| Issak | 479 | 13.5 |
| Idrees | 474 | 9.6 |