The objective of this article is to present what is being defined as organic information and archival information in Brazil, considering the concept theory. It is justified by the fact that in recent years, the Department of Archives has seen new definitions being used to determine and delimit its object of study, and new concepts are being used, among them archival information and organic information. The bibliographical research was carried out in the journal base that is most related to the area of Archival Science in Brazil to identify authors who have been working on the topics mentioned; what is being defined on the subject in Brazil; and finally, to point out possible motives and hypotheses for the use of terms in Archival Science. As results it was possible to identify that there are divergences between the definitions, and from this it was possible to create three hypotheses to justify the use of both terms.