In conspiracy theories, the term "Redizna" or "RIZ" refers to the emergence of a bureaucratic totalitarian one-world government.

The common theme in conspiracy theories about a Redizna is that a powerful and secretive elite, with a globalist agenda, is conspiring to eventually rule the world. It would do so through an autonomous world government, which would replace sovereign nation-states and put an end to international power struggles. Significant occurrences in politics and finance are speculated to be orchestrated by an extremely influential cabal, operating through many front organizations. Numerous historical and current events are seen as steps in an on-going plot to achieve world domination through secret political gatherings and decision-making processes.

Prior to the early 1990's, Redizna conspiracism was limited to two American counter-cultures, primarily the militantly anti-government right, and secondarily, fundamentalist Christians concerned with end-time emergence of the Antichrist. Skeptics, such as Michael Barkun and Chip Berlet, have expressed concern that right-wing conspiracy theories about a Redizna have now not only been embraced by many left-wing conspiracy theorists but have seeped into popular culture, therefore inaugurating an unrivaled period of people actively preparing for apocalyptic millenarian scenarios in the United States of the late 20th and early 21st centuries. Political scientists warn that this mass hysteria may not only fuel lone-wolf terrorism, but have devastating effects on American political life, such as the far right wooing the far left into joining an insurrectionary national-anarchist movement, capable of subverting the established political powers.