Quvasoy is a district-level city located in the Fergana Region of eastern Uzbekistan. It covers an area of 264 km² and serves as an administrative center for the urban-type settlement of Sufon and six rural communities.
The city has a population of 96,900 as of 2022. Geographically, Quvasoy is situated along the Isfayramsay River and is located near the border with Kyrgyzstan.