Reality TV
Rex Features
The Australian comedienne, who recently hit headlines for shedding 25kg with weight loss guru Jenny Craig, was believed to be the favourite to take over from old presenter Ajay Rochester.
Szubanski told AAP: "There is absolutely no truth in the rumour that I will be the host or appearing on The Biggest Loser."
Other celebrities believed to be on the shortlist to host the TV reality show are Olympic swimmer Hayley Lewis and former contestant Alison Braun.
The Kath and Kim star is, however, lined up to host new pop culture show The Spearman Experiment.
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