PS Young Australian was a paddle steamer that was lost on the Roper River in what is now the Northern Territory of Australia.^[1]

In 1854, Young Australian was driven ashore at Cape Northumberland in South Australia.^[2] It serviced the Roper River in the Northern Territory for twenty years before sinking in 1872 while bringing supplies for the overland telegraph work crews at Roper Bar.^[3] Young Australian sunk upstream from the settlement at Ngukurr,^[4][5] and can still be seen in the river on the edge of the Limmen National Park.^{[citation needed]}

In 1980, the wreck site was listed on the now-defunct Register of the National Estate.^[6]

Young Australian received an Engineering Heritage Marker from Engineers Australia as part of its Engineering Heritage Recognition Program.^[1]