Quvasoy is a city in Fergana Region in eastern Uzbekistan. Administratively, Quvasoy is a district-level city, that includes the urban-type settlement Sufon and 6 rural communities. The population of Quvasoy is 96,900 (2022). It has an area of 264 km2 (102 sq mi). It lies along the river Isfayramsay, close to the border with Kyrgyzstan.