Brazil has the largest portion of the Amazon rainforest, covering roughly 60% of the forest’s total area. The rainforest stretches across eight countries and French Guiana, but most of its trees, rivers, and ecosystems lie within Brazil, especially in the northern states of Amazonas, Pará, and Acre.
Brazil’s share includes much of the central and eastern Amazon Basin, where the Amazon River and its major tributaries carry enormous volumes of water toward the Atlantic. The forest is not a single uniform woodland: it includes seasonally flooded várzea forests, permanently flooded igapó forests, upland terra firme forest, and vast river networks.
The other countries with Amazon rainforest include Peru, Colombia, Bolivia, Venezuela, Ecuador, Guyana, Suriname, and French Guiana. Peru has the second-largest national share, which is why it is a common quiz mix-up. Brazil’s dominance is geographic, not a claim that every part of the Brazilian Amazon has the same vegetation or biodiversity.