Preto River
- Preto (disambiguation)
- Preto River (Amapá)
- Preto River (Araçuaí River tributary)
- Preto River (Bahia, Atlantic Ocean)
- Preto River (Bahia, Grande River tributary)
- Preto River (Bahia, Jequié River tributary)
- Preto River (Cricaré River tributary)
- Preto River (Do Peixe River tributary)
- Preto River (Espírito Santo)
- Preto River (Itabapoana River tributary)
- Preto River (Itaúnas River tributary)
- Preto River (Maranhão)
- Preto River (Mariricu River tributary)
- Preto River (Negro River tributary)
- Preto River (Padauari River tributary)
- Preto River (Paracatu River tributary)
- Preto River (Paraibuna River tributary)
- Preto River (Paranaíba River tributary)
- Preto River (Paraná)
- Preto River (Paraíba)
- Preto River (Pernambuco)
- Preto River (Piabanha River tributary)
- Preto River (Rondônia)
- Preto River (Roraima)
- Preto River (São Paulo)
- Preto River (Tocantins River tributary)
- Preto River (Unini River tributary)
- Preto River (Ururaí River tributary)
- Preto da Eva River
- Preto de Candeias River
- Preto do Crespo River
- Rio Preto (disambiguation)
- Río Prieto (disambiguation)