The Order of Attorneys of Brazil (Portuguese: Ordem dos Advogados do Brasil, OAB) is the Brazilian Bar Association.

It is an organization independent from the government, but it has some public powers, which include disciplinary action over its members.

The Federal Constitution of Brazil considered advocacy an essential activity for the maintenance of justice, and Art.

133 provides that "The lawyer is indispensable to the administration of justice and is inviolable for his acts or manifestations in the exercise of his profession, within the limits of the law.

The Constitution of Brazil sets restrictions on the professional practice of law embodied in the fulfillment of the requirements and qualifications they require, which may include, in addition to graduation formal submission of the applicant in the proficiency tests.