1917 in Brazil

Incumbents

Federal government

• President: Venceslau Brás
• Vice President: Urbano Santos da Costa Araújo

  Governors

• :pt:Lista de governadores de Alagoas|Alagoas:
• Amazonas:
• Bahia:
• Ceará:
• :pt:Lista de governadores de Goiás|Goiás:
• Maranhão:
• Mato Grosso:
• Minas Gerais:
• :pt:Lista de governadores do Pará|Pará:
• :pt:Lista de governadores da Paraíba|Paraíba:
• Paraná:
• :pt:Lista de governadores de Pernambuco|Pernambuco:
• :pt:Lista de governadores do Piauí|Piauí:
• Rio Grande do Norte:
• Rio Grande do Sul:
• :pt:Lista de governadores de Santa Catarina|Santa Catarina:
• São Paulo:
• :pt:Lista de governadores de Sergipe|Sergipe:

  Vice governors

• :pt:Lista de vice-governadores do Rio Grande do Norte|Rio Grande do Norte:
• :pt:Lista de vice-governadores de São Paulo|São Paulo:

  Events

• 5 April - The steamship Paraná, loaded with coffee and travelling in accordance with the demands made on neutral countries, is torpedoed by a German submarine; three Brazilians are killed.
• 11 April - Brazil breaks off diplomatic relations with Germany.
• 7 May - Foreign Minister Lauro Müller is obliged to resign because of his German origins.
• 20 May - the ship Tijuca is torpedoed near the French coast by a German submarine.
• 27 July - The steamer Lapa Brazil is hit by three torpedoes from a German submarine.
• 23 October - The Brazilian freighter Macau, one of the vessels seized in the course of the war, was torpedoed by the German submarine SM U-93 near the coast of Spain, and the captain taken prisoner.
• 26 October - World War I: Brazil declares war on the Central Powers.
• 1 November - A mob damages German property in Petropolis, including the restaurant Brahma, the Gesellschaft Germania, the German school, the company Arp, and the German Journal.
• 4 November - Acari Guaíba and another ship are torpedoed by the same German submarine, SM U-151.

  Births

• 9 January - Otto Glória, football coach
• 21 February - Luz del Fuego, ballerina, naturist and feminist
• 17 April - Roberto de Oliveira Campos, economist, writer and politician
• 5 May - Dalva de Oliveira, singer
• 2 September - Laurindo Almeida, guitarist and composer
• 30 September - Chacrinha, comedian, radio and TV personality

  Deaths

• 22 October - Manuel Lopes Rodrigues, artist