The Institute of History andLiterary Theory "G. Calinescu" is conducting research and studies in the field of linguistics and literary theory

The Government of Romania decided to establish the Institute of History of Religions as a research institute subordinated to the Romanian Academy, having as main directions: the history of Indian and Iranian religions, the comparative history of monotheisms and religion and modernity.

Institute of Linguistics „Iorgu Iordan - Al. Rosetti ”is conducting research studies in order to cultivate and promote the Romanian language. It develops works in the field of linguistics, to be used by scholarly and general public alike, such as: grammar guidance, spelling, orthoepy, dictionaries and linguistic atlases

The National Institute of Economic Research "Costin C. Kiritescu" is part of the fundamental research structures of the Romanian Academy and is the continuator of the tradition of economic and social research in Romania, which has its roots for almost a century. INCE's current goals stem from the mission it undertook in the early tenth decade of the twentieth century.

The National Institute for the Study of Totalitarism is dedicated to the research and publication of studies and documents related to various forms of totalitarianism established during the twentieth century in Romania and internationally.