- For artists and places with similar names, see Riana (disambiguation).
Riana (pronounced rye-anna) is a small town in the north-west of Tasmania, next to the Dial Range. It is near Penguin, Tasmania. At the 2016 census, Riana and the surrounding area had a population of 326.
Riana Post Office opened on 1 August 1899. Riana South Post Office opened on 20 January 1908.