Brazil, bisa hukuma Jamhuriyar Tarayya ta Brazil, ita ce babbar ƙasa a Kudancin Amurka da yankin Latin Amurka, ta kasance ta biyar mafi girma a duniya a cikin yanki (daidai da 47.3% na yankin Kudancin Amurka), tare da 8 510 345,538 km² kuma na shida a yawan jama'a (tare da fiye da mutane miliyan 213). Ita kaɗai ce ƙasar Amurka inda ake magana da yawancin yaren Portugal, kuma mafi girma a ƙasar da ake magana da harshen Portugal a doron ƙasa, ban da kasan cewarta ɗaya daga cikin ƙasashe masu al'adu daban-daban, saboda ƙaƙƙarfan ƙaura daga sassa daban-daban na duniya. Tsarin mulkinta na yanzu, wanda aka kafa shi a 1988, yana ganin Brazil a matsayin jamhuriyyar shugaban ƙasa na tarayya, wanda ƙungiyar jihohi 26, Gundumar Tarayya da ƙananan hukumomi dubu biyar da Dari biyar da saba’in (5,570)da aka kafa.