Authenticité, sometimes Zairianisation in English, was an official state ideology of the regime of Mobutu Sese Seko that originated in the late 1960s and early 1970s in what was first the Democratic Republic of Congo, later renamed Zaire. The authenticity campaign was an effort to rid the country of the lingering vestiges of colonialism and the continuing influence of Western culture and to create a more centralized and singular national identity.

The policy, as implemented, included numerous changes to the state and to private life, including the renaming of the Congo and its cities, as well as an eventual mandate that Zairians were to abandon their Christian names for more "authentic" ones. In addition, Western-style attire was banned and replaced with the Mao-style tunic labeled the "abacost" and its female equivalent. The policy began to wane in the late 1970s and had mostly been abandoned by 1990.