Mariano Bustos Lagos (30 March 1899 – 24 June 1973) was a Chilean politician who served as a minister of President Juan Antonio Ríos.
Political career He served as a department head and inspector general of labor, before being appointed Minister of Labor, a position he held from 1942 to 1946 during the administration of Radical president Juan Antonio Ríos.
Bustos later pursued a diplomatic career, serving as Chilean ambassador to Belgium, concurrently accredited to Luxembourg, from 1952 to 1954.
From 1961 to 1962, he served as director of the Diplomatic Academy of Chile, an institution under the Ministry of Foreign Affairs.
Bustos was born in Victoria, Chile, on 30 March 1899, the son of Lázaro Bustos and Amelia Lagos. He married Olga Valdés, with whom he had two daughters. He died on 24 June 1973.
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