Goydagh is a mountain in the Gazakh uezd of the former Yelizavetpol (Ganja) governorate, and currently in the town of Dilijan. It is located 32 km to the northeast of the town of Dilijan, on the right bank of the Aghstafachay. Its height is 2350 m.

The toponym was coined by combining the word “goy” used in the sense of “greenery, a green grass” in Azerbaijani and the word “dagh”.