Karusi, also spelled Karuzi, is a city in eastern Burundi. It serves as the capital of Karuzi Province, the administrative division of the country in which it is located.
The city lies in the eastern part of Burundi, a small landlocked country in the African Great Lakes region. As a provincial capital, Karusi functions as an administrative center for the surrounding area.
Beyond its status as the seat of Karuzi Province, few details about the city are widely documented. It shares its name with the province it heads, and the two spellings — Karusi and Karuzi — are both used to refer to the same place.