Mario Francisco Dueñas Avaria

Mario Francisco Dueñas Avaria (25 November 1917 – 1 November 1969) was a Chilean farmer and politician from the Socialist Party. He served as a deputy for the 14th Departmental Group (Linares, Loncomilla and Parral, in today's Maule Region) for two consecutive terms between 1961 and 1969.

He had previously been acting mayor of Linares in 1960 and alderman of the same commune between 1958 and 1961.

Biography Dueñas completed his primary and secondary studies at the Liceo de Linares. Between 1946 and 1957, he worked as a traveling agent for Laboratorio Chile and also engaged in agricultural activities, managing the farm La Flor in Linares.

He joined the Socialist Party of Chile in 1945, serving as a sectional and regional leader. From 1958 to 1961 he was alderman of Linares, and in 1960 he briefly held the role of acting mayor.

In the 1961 elections he was elected deputy for the 14th Departmental Group (Linares, Loncomilla and Parral) for the 1961–1965 legislative term. He served on the Permanent Committee on Agriculture and Colonization and on the Special Committee on Constitutional Accusation.

In 1965 he was re-elected deputy for the same constituency (1965–1969), sitting on the Permanent Committees on National Defense, Economy and Trade, and the Special Viticulture Committee (1965).

He died in Santiago on 1 November 1969, shortly after completing his parliamentary service.