Suoyarvi (; ; ) is a town and the administrative center of Suoyarvsky District of the Republic of Karelia, Russia, located northwest of Petrozavodsk. Population:

It is known that during the 16th and 17th centuries a settlement existed here known as Shuyezersky pogost (a Russian form of the local Karelian name, meaning something like "swamp town"). The first documented mention dates from 1589 when Suoyarvi is recorded as church community controlled by the Orthodox community of Sortavala. In 1630, Suoyarvi became an independent community.