Chekist narrowly means an agent of the Cheka (ChK), more broadly an agent of the long series of Soviet security agencies including the NKVD, KGB, FSB, SVR, many of which were based in the Lubyanka Building. It may relate to: Cheka, first of a succession of Soviet state security organizations Chekism, term for influence of Soviet state security organizations The Chekist, a 1992 Russian film