| Name | # Entries |
|---|---|
| Clearson | 0 |
| Cashmere | 36 |
| Cash Tobin | 0 |
| Casic | 0 |
| Casillas | 0 |
| Casipillai | 0 |
| Casipit | 1 |
| Casis | 0 |
| Caska | 0 |
| Casken | 0 |
| Casinto | 0 |
| Casippillai | 0 |
| Capuzza | 0 |
| Caracasidis | 0 |
| Caraco | 0 |
| Caracoudis | 0 |
| Carageorge | 0 |
| Carageorgos | 0 |
| Caraig | 1 |
| Carallis | 0 |
| Caramancion | 0 |
| Carameli | 0 |
| Caramidaru | 0 |
| Caraffi | 0 |
| Coxsen | 0 |
| Cox Taylor | 0 |
| Callinan | 25 |
| Callos | 0 |
| Callose | 0 |
| Chase Dunlop | 0 |
| Chass | 0 |
| Chassar | 0 |
| Chassis | 3 |
| Coolwell | 0 |
| Coomaraswamy | 0 |
| Coomb | 0 |
| Constantini | 0 |
| Chudyba | 0 |
| Chudyk | 0 |
| Chudziak | 0 |
| Chueh | 2 |
| Chugh | 5 |
| Chuka | 0 |
| Chukka | 0 |
| Chukri | 0 |
| Chulio | 0 |
| Chum | 2 |
| Chuma | 2 |
| Chumacero | 0 |
| Chumbers | 0 |
| Chuke | 0 |
| Chukkirian | 0 |
| Chulapong | 0 |
| Chummun | 0 |
| Constantopedos | 0 |
| Constantiou | 0 |
| Constant Marmillon | 0 |
| Contardo | 0 |
| Contarini | 0 |
| Contatore | 0 |
| Crest | 23 |
| Cresta | 2 |
| Chance | 5 |
| Chancey | 0 |
| Chanclon Nevado | 0 |
| Chanco | 0 |
| Chand | 282 |
| Chancerel | 0 |
| Coward Lemke | 0 |
| Cowarn | 0 |
| Cowasjee | 0 |
| Cowasji | 0 |
| Cowban | 0 |
| Cowdell | 10 |
| Cowcher Guthrie | 0 |