Azul River may refer to:
Azul River (Argentina) Blue Creek (Belize) or Azul River, in Mexico Río Azul District, a district of La Unión canton, Cartago province, Costa Rica
Brazil Azul River (Acre) Azul River (Ivaí River tributary) Azul River (Mato Grosso) Azul River (Piquiri River tributary) Azul River (Rio Grande do Sul)
See also Agua Azul river, Chiapas and Tabasco, Mexico Acul River, a river of Haiti