| Name | Gender | Appearances | Top Performance |
|---|---|---|---|
| Wayne Jones | Male | 3 | 9th |
| Double Jools T And Claire S | Male | 1 | 35th |
| Brian Jordan | Male | 1 | 86th |
| Kaye Josephs | Female | 1 | 92nd |
| Laura Josephson | Female | 1 | 28th |
| Team Josh Payne & Ashley Christie | Male | 1 | 28th |
| Dirk Judson | Male | 2 | 11th |
| Craig Julian | Male | 1 | 31st |
| Daniel Julian | Male | 1 | 135th |
| Ella Julian | Female | 1 | 37th |
| Double Jungle Juice | Male | 1 | 11th |
| Josh Junior | Male | 1 | 45th |
| Dave Jupp | Male | 1 | 5th |
| David Jupp | Male | 4 | 7th |
| Four Justin, Ryan, Harry, Bailey S | Male | 1 | 27th |
| Double Justine & Lou Perkins | Male | 1 | 46th |
| Aaron K | Male | 2 | 12th |
| Double K Bedggood-Noa / K Tito | Male | 1 | 20th |
| Florian Kairn | Male | 1 | 49th |
| Rob Kaiwai | Male | 2 | 4th |
Retrieving Competitors