| Name | # Entries |
|---|---|
| Kone | 46 |
| Kempton | 45 |
| Knowles | 45 |
| Klaas | 45 |
| Kohler | 44 |
| Kelsey | 43 |
| Kells | 43 |
| Kroon | 43 |
| Karim | 41 |
| Keeling | 40 |
| Kinnear | 39 |
| Kitson | 38 |
| Kellett | 38 |
| Killian | 37 |
| Knipe | 36 |
| Kwon | 36 |
| Krishna | 35 |
| Kirkham | 35 |
| Kwan | 34 |
| Kerrigan | 34 |
| Keil | 34 |
| Kirton | 34 |
| Kettle | 33 |
| Koop | 33 |
| Knudsen | 33 |
| Kaye | 33 |
| Kingston | 33 |
| Kingsbury | 33 |
| Kell | 33 |
| Kaiser | 33 |
| Kirkwood | 32 |
| Klaassen | 31 |
| Kirwan | 30 |
| Kelliher | 30 |
| Klink | 30 |
| Kenton | 28 |
| Kirstein | 28 |
| Kinder | 28 |
| Krager | 27 |
| Kazi | 27 |
| Kelleher | 26 |
| Keeley | 26 |
| Kem | 25 |
| Kite | 25 |
| Kale | 25 |
| Karam | 24 |
| Kingsley | 24 |
| Kruse | 23 |
| Kaya | 23 |
| Korb | 22 |
| Kula | 22 |
| Kirchner | 22 |
| Kain | 22 |
| Krull | 22 |
| Kleinsmith | 21 |
| Kennelly | 21 |
| Kraft | 21 |
| Kieser | 21 |
| Kai | 21 |
| Kinnaird | 21 |
| Kurt | 21 |
| Kinloch | 20 |
| Knights | 20 |
| Kies | 20 |
| Kinsey | 19 |
| Klassen | 19 |
| Kung | 19 |
| Kidd | 19 |
| Kee | 18 |
| Kantor | 18 |
| Kern | 18 |
| Kassim | 17 |
| Kelso | 17 |
| Koller | 17 |
| Klaus | 17 |