The origin of the Institute of Language Studies was the Department of Linguistics, created in 1968 in the Institute of Philosophy and Human Sciences. This was the first Department of Linguistics created in Brazil, and its main purpose was the academic qualification founded on the scientific study of languages and the theoretical training with special attention to Portuguese language.

The department rapidly increased and developed new areas of research, with the constitution of a Center of Applied Linguistics, in 1974, and a nucleus of Literary Theory within the Department of Linguistics, in 1975.