Dolegna del Collio (Standard Friulian: Dolegne dal Cuei; Southeastern Friulian: Dolegna dal Cuei) is a comune (municipality) in the Regional decentralization entity of Gorizia in the Italian region of Friuli-Venezia Giulia, located about 50 km northwest of Trieste and about 15 km northwest of Gorizia, on the border with Slovenia. , it had a population of 419 and an area of 12.5 km2. The municipality of Dolegna del Collio contains the frazioni (boroughs) Mernicco, Restoccina, Ruttars, Scriò, Trussio, Breg, Lonzano, Venco, and Barbana nel Collio. Dolegna del Collio borders the following municipalities: Brda (Slovenia), Cormons, Corno di Rosazzo, Prepotto.

Demographic evolution