Double consciousness is the dual self-perception experienced by subordinated or colonized groups in an oppressive society. The term and the idea were first published in W. E. B. Du Bois's autoethnographic work, The Souls of Black Folk in 1903, in which he described the African American experience of double consciousness, including his own.

Originally, double consciousness was specifically the psychological challenge African Americans experienced of "always looking at one's self through the eyes" of a racist white society and "measuring oneself by the means of a nation that looked back in contempt". The term also referred to Du Bois's experiences of reconciling his African heritage with an upbringing in a European-dominated society.

The term was introduced by Ralph Waldo Emerson in his 1842 essay "The Transcendentalist". Du Bois first used the term in an article titled "Strivings of the Negro People", published in the August 1897 issue of the Atlantic Monthly. It was later republished and slightly edited under the title "Of Our Spiritual Strivings" in his book, The Souls of Black Folk. Du Bois describes double consciousness as follows:

It is a peculiar sensation, this double-consciousness, this sense of always looking at one's self through the eyes of others, of measuring one's soul by the tape of a world that looks on in amused contempt and pity. One ever feels his two-ness,—an American, a Negro; two souls, two thoughts, two unreconciled strivings; two warring ideals in one dark body, whose dogged strength alone keeps it from being torn asunder. The history of the American Negro is the history of this strife – this longing to attain self-conscious manhood, to merge his double self into a better and truer self. In this merging he wishes neither of the older selves to be lost. He does not wish to Africanize America, for America has too much to teach the world and Africa. He wouldn't bleach his Negro blood in a flood of white Americanism, for he knows that Negro blood has a message for the world. He simply wishes to make it possible for a man to be both a Negro and an American without being cursed and spit upon by his fellows, without having the doors of opportunity closed roughly in his face.

The concept of double consciousness has been expanded on by many different scholars in the 20th and early 21st centuries. Commentators have examined how the concept can be expanded to other aspects of the African American experience, or for other marginalized groups who experience a similar forms of oppression.

Paul Gilroy applied theories of culture and race to the study and construction of African American intellectual history. He is known especially for marking a turning point in the study of the African diasporas. His book The Black Atlantic: Modernity and Double Consciousness (1993) introduces the "Black Atlantic" as a source for cultural construction. Gilroy pioneers a shift in contemporary black studies by arguing for a rejection of the notion of a homogeneous nation-state based nationality in favor of analyzing "the Atlantic as one single, complex unit of analysis in their discussions of the modern world and use it to produce an explicitly transnational and intercultural perspective".

Gilroy based his insight on the Atlantic slave trade and marked it as the foundation for the diaspora. He recognized the significance of European and African transnational travel as a foundation for double consciousness. Gilroy used Du Bois's theory of double consciousness to suggest there exists an internal struggle to reconcile being both European and Black, which was his main focus in his book. He even characterized the Black Atlantic by the influence of slave trade "routes" on black identity. He aimed to unify black culture with the connection to the homeland as well as the cultural exchanges that occurred afterward. Gilroy's work became popular with the Black diaspora in Europe, and his theories became the foundation for several black power movements throughout the continent.

Gilroy argues that occupying the space between these two dialectal subjectivities is "viewed as a provocative and even oppositional act of political insubordination". This means that for black people across diaspora, thinking of the duality in their identity as one is almost paradoxical, and conceptualizing and actualizing this is a move of symbolic resistance in modernity.^{[citation needed]}