| Name | # Entries |
|---|---|
| Kam | 200 |
| Keleher | 200 |
| Keeble | 200 |
| Keyes | 199 |
| Kaplan | 199 |
| Kurtz | 198 |
| Kerridge | 197 |
| Kee | 192 |
| Kowald | 189 |
| Krueger | 189 |
| Kilgour | 186 |
| Karimi | 184 |
| Kao | 184 |
| Kingi | 184 |
| Kahler | 183 |
| Klemm | 182 |
| Koster | 182 |
| Keats | 182 |
| Kehoe | 182 |
| Kinder | 181 |
| Kallahan | 181 |
| Kelsall | 180 |
| Kenneth | 180 |
| Kleidon | 180 |
| Kaminski | 178 |
| Krishman | 178 |
| Kuhl | 177 |
| Kichen | 177 |
| Kingslee | 176 |
| Kc | 175 |
| Kempster | 174 |
| Khatri | 172 |
| Kennard | 172 |
| Kentwell | 172 |
| Khadka | 171 |
| Krieger | 169 |
| Kylie | 168 |
| Kunde | 167 |
| Knudsen | 166 |
| Kershaw | 164 |
| Kime | 163 |
| Kinsey | 163 |
| Klose | 162 |
| Kitchin | 162 |
| Kohn | 161 |
| Khor | 160 |
| Keyte | 159 |
| Keily | 159 |
| Karrigan | 158 |
| Kajewski | 158 |
| Karagiannis | 157 |
| Kidman | 157 |
| Kate | 157 |
| Kennewell | 157 |
| Khanna | 156 |
| Kneale | 156 |
| Kotevski | 156 |
| Kaufman | 154 |
| Kulkarni | 153 |
| Kitchen | 153 |
| Kamal | 152 |
| Khouri | 152 |
| Kabir | 152 |
| Koop | 151 |
| Kopp | 151 |
| Kealy | 150 |
| Kells | 150 |
| Killick | 149 |
| Kingdon | 149 |
| Kerwin | 148 |
| Ken | 147 |
| Kilner | 147 |
| Kho | 145 |
| Kingham | 145 |
| Kelson | 145 |