João Tamagnini Barbosa

João Tamagnini de Sousa Barbosa (December 30, 1883 – December 15, 1948), commonly known by João Tamagnini Barbosa, 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.

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

After the May 28, 1926 revolution that installed the Ditadura Nacional (National Dictaroship) regime that would be followed by António de Oliveira Salazar's Estado Novo (New State) he served as President of the General Assembly of S.L. Benfica sports club, from 1947 to 1948.