| Name | Gender | Appearances | Top Performance |
|---|---|---|---|
| Bruce Jackson | Male | 1 | 5th |
| Monique Jackson | Female | 2 | 41st |
| Peter Jackson | Male | 1 | 49th |
| Team Jackson and Oban | Male | 1 | 1st |
| Jake Jackson-Grammer | Male | 2 | 9th |
| Aaron Jacobs | Male | 1 | 10th |
| Todd Jago | Male | 2 | 25th |
| Tipene James | Male | 1 | 85th |
| Double James & Matt Flannery | Male | 4 | 2nd |
| LyallBay Jamie | Female | 2 | 10th |
| Double Jamie Hains And Emily Cameron | Male | 1 | 118th |
| Kate Jamieson | Female | 1 | 47th |
| Phil Jamieson | Male | 7 | 8th |
| Shane Janssen | Male | 1 | 14th |
| Bo Jarrat | Female | 1 | 15th |
| Gary Jarvis | Male | 14 | 6th |
| Joshua Jarvis | Male | 1 | 16th |
| Kristin Jarvis | Female | 12 | 7th |
| Oscar Jarvis | Male | 2 | 5th |
| Kyla Jasperse | Female | 1 | 13th |
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