João Tamagnini de Sousa Barbosa (30 December 1883 – 15 December 1948), commonly known as João Tamagnini Barbosa (Portuguese pronunciation: [ʒuˈɐ̃w tamaˈɲini βɐɾˈβɔzɐ]), or Tamagnini Barbosa, was a Portuguese military officer and politician of the Portuguese First Republic (1910–1926). He served as Minister of Interior, Colonies and Finances during the period known as "New Republic", after the coup d'état of the National Republican Party ("Sidonist Party") and the semi-dictatorial government of President/Prime Minister Sidónio Pais, followed by a brief participation in the provisional government of João do Canto e Castro after the assassination of Sidónio Pais.

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João Tamagnini Barbosa
Minister for the Colonies
In office 11 December 1917 – 15 May 1918
Prime Minister	Sidónio Pais
Preceded by	Ernesto Jardim de Vilhena
Succeeded by	Alexandre José de Vasconcelos e Sá
Minister for War
In office 11 May 1918 – 15 May 1918
Prime Minister	Sidónio Pais
Preceded by	Sidónio Pais
Succeeded by	Amílcar Abreu Mota
Minister for Interior
In office 15 May 1918 – 9 October 1918
Prime Minister	Sidónio Pais
Preceded by	Henrique Forbes Bessa
Succeeded by	António Bernardino de Sousa Ferreira
Minister of Finance
In office 9 October 1918 – 23 December 1918
Prime Minister	Sidónio Pais (October 9, 1918–December 14, 1918) João do Canto e Castro (14 December 1918–23 December 1918)
Preceded by	Francisco Xavier Esteves
Succeeded by	Ventura Malheiro Reimão
Prime Minister of Portugal (15th of the Republic)
In office 23 December 1918 – 27 January 1919
President	João do Canto e Castro
Preceded by	João do Canto e Castro (interim) Sidónio Pais (effective)
Succeeded by	José Relvas
Minister for Interior
In office 23 December 1918 – 27 January 1919
Prime Minister	Himself
Preceded by	António Bernardino de Sousa Ferreira
Succeeded by	José Relvas
Personal details
Born	(1883-12-30)30 December 1883 Portuguese Macau
Died	15 December 1948(1948-12-15) (aged 64) Portugal
Political party	Republican Centrist Party later National Republican Party ("Sidonist Party")
Spouse	Maria Luísa da Cunha e Silva
Children	Maria Helena, Luís Artur
Occupation	Army officer (Brigadier) and engineer

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He briefly served as prime minister, after João do Canto e Castro, from 23 December 1918 to 27 January 1919.

After the 28 May 1926 revolution that installed the Ditadura Nacional (National Dictatorship) regime that would be followed by António de Oliveira Salazar's Estado Novo (New State), he was elected President of the General Assembly of S.L. Benfica on 19 January 1946. Morever, he served as the 18th president of Benfica from 25 January 1947 to 15 December 1948.^[1]