Mateo Martinić Beroš (born 20 October 1931) is a Chilean historian, politician and lawyer. He has primarily dealt with the history of Magallanes Region. He entered the University of Chile in 1953 studying briefly pedagogy before moving on to study law and then continued his law studies in the Catholic University of Chile. He finally became a lawyer in 1983. From 1964 to 1970 he served as intendant of Magallanes Region. Together with botanist Edmundo Pisano Martnic was among the founding members of Instituto de la Patagonia which in 1985 became integrated into the University of Magallanes.