| Name | Gender | Appearances | Top Performance |
|---|---|---|---|
| Jason Stapp | Male | 3 | 3rd |
| Fiona Stechmann | Female | 1 | 123rd |
| Sam Stedman | Male | 1 | 58th |
| Louise Stephens | Female | 3 | 42nd |
| Hadleigh Stephenson | Male | 2 | 56th |
| Team Steve & Lewis | Male | 1 | 14th |
| Andrew Stevens | Male | 2 | 3rd |
| Peter Stevens | Male | 1 | 18th |
| Tara Stevens | Female | 1 | 17th |
| Jasmin Stevenson | Female | 6 | 21st |
| Ashley Stewart | Female | 1 | 1st |
| Derek Stewart | Male | 18 | 6th |
| Hayley Stewart | Female | 1 | 10th |
| Matt Stewart | Male | 3 | 54th |
| Sammi Stewart | Female | 1 | 147th |
| Susie Stewart | Female | 2 | 35th |
| Suzy Stewart | Female | 1 | 46th |
| Oskar Stielau | Male | 5 | 4th |
| Rebekka Still | Female | 1 | 86th |
| Pablo Stmary | Male | 1 | 35th |
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