| Name | # Entries |
|---|---|
| Clark | 11568 |
| Campbell | 9648 |
| Cook | 8689 |
| Cooppers | 8544 |
| Cox | 8355 |
| Chen | 7925 |
| Carter | 7370 |
| Clarke | 5707 |
| Clarke | 5359 |
| Collins | 5048 |
| Collin's | 4278 |
| Connor | 4187 |
| Cole | 4030 |
| Carroll | 4005 |
| Chan Chan | 3889 |
| Coleman | 3659 |
| Chapman | 3593 |
| Carr | 3284 |
| Cross | 3269 |
| Camerone | 3018 |
| Curtis | 3009 |
| Craig | 2933 |
| Campbell' | 2834 |
| Chap Man | 2531 |
| Casey | 2468 |
| Chambers | 2098 |
| Cullen | 2098 |
| Camerron | 2045 |
| Carey | 2043 |
| Cunnngham | 1993 |
| Choi | 1913 |
| Chung | 1820 |
| Crawford | 1818 |
| Cooper | 1800 |
| Clifford | 1785 |
| Clayton | 1748 |
| Connolly | 1744 |
| Carpenter | 1571 |
| Cahill | 1563 |
| Clements | 1537 |
| Cohen | 1515 |
| Currie | 1511 |
| Cheng Cheng | 1504 |
| Cooke | 1490 |
| Crowe | 1472 |
| Conway | 1458 |
| Callaghan | 1399 |
| Coates | 1390 |
| Chandlor | 1389 |
| Corbett | 1384 |
| Cowan | 1381 |
| Caldwell | 1324 |
| Crane | 1315 |
| Cheung | 1300 |
| Cummins | 1276 |
| Cassidy | 1275 |
| Cleary | 1263 |
| Ch'ang | 1224 |
| Curran | 1212 |
| Chu | 1191 |
| Connelli | 1191 |
| Cartwright | 1181 |
| Connall | 1177 |
| Cooke | 1152 |
| Cain | 1146 |
| Coles | 1146 |
| Crouch | 1144 |
| Charrles | 1139 |
| Cannon | 1131 |
| Cameron | 1128 |
| Carson | 1123 |
| Crwford | 1121 |
| Charlton | 1116 |
| Clancy | 1115 |
| Chang | 1113 |