Quvasoy (Uzbek: Quvasoy/Қувасой; Tajik: Кувасой; Russian: Кувасай, romanized: Kuvasay) 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.

[4] It lies along the river Isfayramsay, close to the border with Kyrgyzstan.

There is a central hospital, polyclinic, pharmacy and other medical institutions.

Favorable natural conditions, the richest deposits of limestone, gypsum and various clays, the proximity of a large coal mine, the railway passing through Kuvasoy - all this created conditions for the development of a large industrial center during the Soviet era.