Tristeno (Greek: Τρίστενο; older name Δριστένικο, Dristeniko), is a village and a community of the Zagori municipality.

It was first recorded in a golden edict of 1319 (a type of concession) of Byzantine Emperor Andronikos II.

Several years after the liberation of Epirus (1912-1913), in 1927 with a decree[9] (ΦΕΚ 76/1927), it was renamed Tristeno, out of the three straits that exist above the village.

The first settlers are mentioned as shepherds from Himarra who brought their sheep for grazing in Zagori in the summer.

This version is not accepted by the village's inhabitants who oppose the view that the first settlers came from Veria and were craftsmen.