99 results
| Ismail | 541 |
| Isaacs | 375 |
| Irvine | 318 |
| Ireland | 279 |
| Ingram | 271 |
| Ice | 247 |
| Irving | 213 |
| Inglis | 188 |
| Imperial | 183 |
| Innes | 168 |
| Isaac | 164 |
| Ivan | 100 |
| Ingham | 84 |
| Island | 78 |
| Ives | 58 |
| Irish | 53 |
| Ing | 53 |
| Ivory | 52 |
| Iles | 44 |
| Islam | 43 |
| Isherwood | 41 |
| Illingworth | 40 |
| Ingle | 39 |
| Ibrahim | 38 |
| Irwin | 35 |
| Israel | 29 |
| Inks | 27 |
| Ivy | 27 |
| Iqbal | 26 |
| Insley | 25 |
| Ivey | 22 |
| Ismael | 21 |
| Iversen | 19 |
| Italiano | 19 |
| Isaacson | 18 |
| Ito | 17 |
| Irons | 14 |
| Isabella | 12 |
| Ivanov | 9 |
| Iyer | 9 |
| Ingles | 8 |
| Ince | 8 |
| Ike | 8 |
| Inge | 7 |
| Isles | 7 |
| Issa | 6 |
| Ishmael | 6 |
| Ireton | 6 |
| Isabel | 6 |
| Izard | 5 |
| Iverson | 5 |
| Ide | 4 |
| Izzard | 4 |
| Inman | 4 |
| Ishikawa | 4 |
| Iovino | 4 |
| Ingerson | 4 |
| Innocent | 4 |
| Ines | 4 |
| Imhoff | 3 |
| Iorio | 3 |
| Isreal | 3 |
| Ingoglia | 3 |
| Inga | 3 |
| Irvin | 3 |
| Isbell | 3 |
| Igo | 3 |
| Inoue | 3 |
| Iman | 3 |
| Izzo | 2 |
| Isler | 2 |
| Isidoro | 2 |
| Ivins | 2 |
| Isabelle | 2 |
| Isenberg | 1 |