There are several rivers named Santo Antônio River. *

San Antonio River (South America) The San Antonio River (Spanish, Río San Antonio, Portuguese, Rio Santo Antônio; also called San Antonio Guazú) is a tributary of the Iguazu River. The San Antonio River forms the border between Misiones Province in Argentina and Paraná State in ...

on the border between Argentina and Brazil

Brazil

Santo Antônio River (Amapá) The Santo António River is a river of Amapá state in north-eastern Brazil. See also *List of rivers of Amapá List of rivers in Amapá (Brazilian State). The list is arranged by drainage basin from north to south, with respective tributarie ...

Santo Antônio River (Bahia) The Santo Antônio River is a river of Bahia state in eastern Brazil. It is a tributary of the Paraguaçu River The Paraguaçu River () is a river in Bahia state of eastern Brazil. It runs from the Chapada Diamantina highlands of central Bahia t ...

* Santo Antônio River (Doce River tributary) * Santo Antônio River (Itaúnas River tributary) * Santo Antônio River (Paraná) * Santo Antônio River (Rio de Janeiro) * Santo Antônio River (Do Sono River tributary) * Santo Antônio River (Santa Catarina) *

Santo Antônio River (Tocantins) The Santo Antônio River is a river of Tocantins state in central Brazil. See also *List of rivers of Tocantins List of rivers in Tocantins (Brazilian State). The list is arranged by drainage basin, with respective tributaries indented under eac ...

* Santo Antônio Grande River {{DEFAULTSORT:Santo Antonio River