Hernán Alberto Büchi Buc (Latin American Spanish: [eɾˈnan alˈβeɾto ˈβixi ˈβuk]; born March 6, 1949) is a Chilean economist who served as minister of finance of the Pinochet dictatorship.

In 1975, Hernán Büchi began as a consultant of the Secretary of Economics, Pablo Baraona, and as a chair of the board of directors of the state-owned sugar refiner Industria Azucarera Nacional.

Control of public spending, periodic devaluations, and incentives for domestic savings, foreign investment and the repatriation of capital gradually brought inflation down to 12 per cent by 1989, the lowest rate in Latin America.

[3]After Pinochet stepped down in 1990, Büchi founded the "Liberty and Development Institute" (Libertad y Desarrollo), where he currently is the chairman of the "International Economy Center Council" and a consultant.

[5] During the 1989 Chilean presidential election Büchi stood for the right-wing Democracy and Progress Party and Unión Demócrata Independiente but was also supported by Renovación Nacional and Democracia Radical.

He has acted as member of the board of directors of the large holding company Quiñenco S.A.[citation needed] and Consorcio Nacional de Seguros, which is a large Chilean insurance company, and Falabella S.A.[11] In 1993, Büchi detailed his experience as Minister of the Treasury of Chile during 1985–1989, in a book called "The Economic Transformation of Chile: A Personal Account", where he discusses the liberalization of the Chilean economy, and the role he played in it.