The chatter about the Olympian going under the knife kicked off during his TV coverage of the Invictus Games on ABC.
When you look at images of Thorpe today, compared to older snaps - there is a visible new point at the end of his nose, like a "ski jump".
The Daily Mail believe this type rhinoplasty involves "the sculpting of cartilage in the centre of his appendage" and a tip that curves upwards.
While Thorpe's camp is yet to comment on the reports, it is believed he may have undergone the rumoured surgery mid 2017.
The 36-year-old is one of the nation's biggest sporting names, having won five Olympic and 10 Commonwealth Games.