| Name | Gender | Appearances | Top Performance |
|---|---|---|---|
| LyallBay Jesse | Female | 1 | 15th |
| Emma Jessop | Female | 3 | 6th |
| Keith Jessop | Male | 4 | 65th |
| Stephen Jestin | Male | 1 | |
| Douglas Jewson | Male | 5 | 56th |
| Antonio Jimenez Rodriguez | Male | 1 | 142nd |
| Double Jimmy Feathery & Fiona Dowling | Male | 1 | 1st |
| Team Jodie Faavae / Irene Turner | Female | 1 | 22nd |
| Collins Joe | Male | 1 | 5th |
| Double Joe & Jackie Macintrye | Male | 1 | 17th |
| Double Joe & Jackie Macintyre | Male | 1 | 22nd |
| Double Joe And Paul | Male | 1 | 6th |
| Kasey Joe-Mindoe | Male | 1 | 13th |
| Rhys John | Male | 2 | 4th |
| Team John Knight | Male | 1 | 42nd |
| Double John Toomath & David Morrison | Male | 1 | 23rd |
| Brian Johnson | Male | 2 | 12th |
| Charlotte Johnson | Female | 3 | 64th |
| David Johnson | Male | 1 | 31st |
| Mark Johnson | Male | 8 | 22nd |
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