How many countries border Brazil?

Brazil borders 10 countries when French Guiana, an overseas department of France, is included as a neighboring territory.

Brazil shares land boundaries with every independent South American country except Chile and Ecuador. Its neighbors are Argentina, Bolivia, Colombia, Guyana, Paraguay, Peru, Suriname, Uruguay, and Venezuela, plus France through French Guiana. These borders form a vast arc around most of Brazil’s northern, western, and southern edges.

The number can seem surprising because quizzes often say Brazil borders nine countries, counting only sovereign states. The answer 10 follows the standard geographic treatment that counts its border with French Guiana. Since French Guiana is politically part of France, Brazil also has an international border with France.

Brazil’s total land frontier is about 16,885 kilometers. Several borders follow major rivers, and notable triple points include the meeting of Brazil, Argentina, and Paraguay near the Iguazu Falls region.