Patnos was a historically important Armenian city, is now a district of Agri Province of Turkey on a plain surrounded by high mountains including Süphan, watered by tributaries of the Murat River. 82 km south of the city of Agri on the road to Van.

The plain has been settled since the Great Flood and this was a centre of the Urartu civilisation (Japheth's descendants). The city has many historical ruins from Urartian period. There are a number of places of historical interest around Patnos, including the castle of Aznavur Tepe, an impressive Urartu building.

Today Patnos is a small town in an impoverished rural area.