Yunak is a village located in the municipality of Avren within Varna Province in northeastern Bulgaria. It is situated in the Dobrudzha region, which spans the northeastern part of the country near the Black Sea coast.
As a village within the Avren municipality, Yunak is part of a rural administrative area in Varna Province. The municipality encompasses several settlements in this part of northeastern Bulgaria, where the landscape is characterized by the transition between the Danube plain and coastal regions.