| Name | # Entries |
|---|---|
| K | 14560 |
| Knites | 4451 |
| Kelly' | 3954 |
| Kumar' | 1626 |
| Kollier | 931 |
| Kingstoun | 734 |
| Kavanah | 704 |
| Knox | 594 |
| Khoury | 562 |
| Keeffe | 558 |
| Kinlan | 548 |
| Khalil | 391 |
| Ko Ng | 325 |
| Keir | 309 |
| Kirkby | 282 |
| Kiernan | 274 |
| Kendric | 254 |
| Kirchner | 251 |
| Kyriacou | 241 |
| Keevers | 239 |
| Kim Kim | 229 |
| Kieu | 224 |
| Karlisle | 220 |
| Kinear | 215 |
| Kuchel | 206 |
| Kinsell | 204 |
| Ke | 202 |
| Kenworthy | 201 |
| Kowald | 189 |
| Kilgour | 186 |
| Karimi | 184 |
| Kao | 184 |
| Kahler | 183 |
| Kehoe | 182 |
| Kallahan | 181 |
| Kleidon | 180 |
| Krishman | 178 |
| Kichen | 177 |
| Kingslee | 176 |
| Kentwell | 172 |
| Khadka | 171 |
| Kylie | 168 |
| Kunde | 167 |
| Karrigan | 158 |
| Kajewski | 158 |
| Karagiannis | 157 |
| Kotevski | 156 |
| Kabir | 152 |
| Kingdon | 149 |
| Kelson | 145 |
| Knezevic | 144 |
| Kesby | 142 |
| Ku Ku | 140 |
| Kha | 136 |
| Khuu | 129 |
| Kazzi | 128 |
| Kroon | 126 |
| Kropp | 126 |
| Kenneally | 126 |
| Keddie | 122 |
| Kin | 122 |
| Keighran | 119 |
| Kiem | 116 |
| Kiel | 115 |
| Knaggs | 111 |
| Krstevski | 111 |
| Kell' | 108 |
| Kreis | 108 |
| Kranz | 107 |
| Kinsela | 107 |
| Khanal | 104 |
| Katherina | 104 |
| Khodr | 104 |
| Klienig | 103 |
| Ker Ker | 103 |