Caxambu do Sul is a municipality in the state of Santa Catarina, located in the South region of Brazil. It is one of the many municipalities that make up Santa Catarina, a state in southern Brazil whose administrative divisions include both cities and smaller municipal districts.
The municipality is situated within Santa Catarina, Brazil's southernmost state, a region bordered by the Atlantic Ocean to the east and sharing borders with the Brazilian states of Paraná to the north and Rio Grande do Sul to the south. Santa Catarina is known for its varied geography, which includes coastal areas, valleys, and highland plateaus.
As a Brazilian municipality, Caxambu do Sul functions as a local administrative unit responsible for providing services to its residents. It shares its name in part with Caxambu, a well-known city in the state of Minas Gerais, but the two are distinct and located in different regions of the country.