| Name | Gender | Appearances | Top Performance |
|---|---|---|---|
| Mary Clark | Female | 2 | 103rd |
| Sam Clark | Male | 1 | 5th |
| Samuel Clark | Male | 2 | 12th |
| Shani Clark | Female | 3 | 31st |
| Becky Clarke | Female | 2 | 29th |
| Caitlin Clarke | Female | 1 | 5th |
| Sam Clarke | Male | 9 | 1st |
| Salvador Clavijo Lopez | Male | 1 | 128th |
| Darren Clay | Male | 3 | 6th |
| Phil Claytion | Male | 1 | 74th |
| Felicity Cleaver | Female | 1 | 24th |
| Jessica Cleghorn | Female | 6 | 3rd |
| Sam Clements-Stewart | Male | 3 | 35th |
| Richard Cliff | Male | 7 | 8th |
| Anna Clifton | Female | 10 | 1st |
| Aotea Clifton | Female | 5 | 1st |
| Jack Clifton | Male | 16 | 1st |
| Louise Clifton | Female | 3 | 15th |
| Samalulu Clifton | Female | 5 | 2nd |
| Tuva'a Clifton | Male | 8 | 2nd |
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