Arriana () is a municipality in the Rhodope regional unit, Greece. The seat of the municipality is in Fillyra.
The municipality Arriana was formed at the 2011 local government reform by the merger of the following 4 former municipalities, that became municipal units:
The municipality has an area of 771.175 km<sup>2</sup>, the municipal unit 178.391 km<sup>2</sup>.
These results include only the municipal unit of Arriana, not the whole municipality.