Preto River
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Preto River or Prêto River may refer to these rivers in Brazil:
Amapá
Amazonas
Bahia
- Preto River (Bahia, Atlantic Ocean)
 - Preto River (Bahia, Grande River tributary)
 - Preto River (Bahia, Jequié River tributary)
 
Espírito Santo
- Preto River (Cricaré River tributary)
 - Preto River (Espírito Santo), Itabapoana River tributary
 - Preto River (Itabapoana River tributary), west of the above
 - Preto River (Itaúnas River tributary)
 - Preto River (Mariricu River tributary)
 
Goiás
- Preto River (Paracatu River tributary)
 - Preto River (Paranaíba River tributary)
 - Preto River (Tocantins River tributary)