''Santo Antônio do Sudoeste'' () is a
municipality in the state of
Paraná,
Brazil with a population of 20,261 inhabitants.
IBGE 2020
/ref> It is on the border between Argentina and Brazil, opposite the Argentine city of San Antonio, Misiones
San Antonio is a city in the north-eastern region of Misiones Province, Argentina, and the capital of the General Manuel Belgrano Department. It lies on the Brazilian border at . Its population was 3,665 at the 2010 census (INDEC).
The municipa ...
. The San Antonio River separates the two cities.
References
Municipalities in Paraná
{{ParanáBR-geo-stub