How many countries does Brazil share a border with?

The borders of Brazil are the international borders that Brazil shares with neighboring countries. Brazil has borders with ten countries, every country in South America with the exception of Chile and Ecuador, totaling 16,885 kilometres (10,492 mi). Brazil has the world's third longest land border, behind China and Russia.

Brazil has borders with Argentina, Bolivia, Colombia, Guyana France (French Guiana), Paraguay, Peru, Suriname, Uruguay and Venezuela.

With many of Brazil's borders defined by rivers, there are several water falls along the border. The most notable border water falls include the Iguazu Falls on the border with Argentina and Orinduik Falls on the border with Guyana.

Until 1982, the border with Paraguay contained the Guaíra Falls. The falls were submerged following the construction of the Itaipu Dam.