Currently, in the academic field, the different currents in psychology are often opposed without deepening their points of agreement. As a result of this, the present investigation makes a comparison of the unconscious concept according to: Sigmund Freud father of Psychoanalysis; Milton Erickson influencing the Systemic model; And Manuel Froufe compiler and impeller of the unconscious within the Cognitive model. The methodology was documentary, for which we used texts extracted from specific search engines such as: Google Academic, Redalyc, Scielo, Proquest, and books of authors relevant to the topic. It was concluded that there is a difference in the area in which the term was developed, being clinical in Erickson and Freud and academic-experimental in Froufe. It is also important to note that the popularity of the unconscious is remarkable in Freud, in Erickson's case it is comparative...