General Requirements:
A passport and visa are required for U.S. citizens traveling to Brazil for any purpose. Brazilian visas must be obtained in advance from the Brazilian Embassy or consulate nearest to the traveler's place of residence. There are no "airport visas" and immigration authorities will refuse entry to Brazil to anyone not possessing a valid visa. All Brazilian visas, regardless of the length of validity, must initially be used within 90 days of the issuance date or will no longer be valid. Americans reentering Brazil must be able to show an entry stamp in their passport proving that the visa was issued within 90 days; otherwise they will not be allowed reentry. Immigration authorities will not allow entry into Brazil without a valid visa. The U.S. Government cannot assist travelers who arrive in Brazil without proper documentation.
Travelers under 18 years of age and their parents should carefully review the visa application requirements for the consular post at which they are applying. The adjudicating official may require a birth certificate and notarized travel authorization.
Travelers are reminded that they are subject to local law. Showing contempt to a Brazilian government official at the port of entry, or elsewhere, is a serious offense. (Fines for such offenses are based on the offender’s claimed income.)
Additionally, travelers who have recently visited certain countries, including most other Latin American countries, may be required to present an inoculation card indicating they had a yellow fever inoculation or they may not be allowed to board the plane or enter the country. Minors (under 18) traveling alone, with one parent or with a third party, must present written authorization by the absent parent(s) or legal guardian specifically granting permission to travel alone, with one parent, or with a third party. The authorization (in Portuguese) must be notarized and then authenticated by the Brazilian Embassy or Consulate.
General Consulates of Brazil: