Estosadok, sometimes spelled Esto-Sadok or Estosadoc is a rural locality under the administrative jurisdiction of Adlersky City District of the City of Sochi in Krasnodar Krai, Russia, located in the Caucasus Mountains on the Mzymta, 4 kilometers (2.5 mi) upstream from Krasnaya Polyana. Estosadok is adjacent to Caucasus Nature Reserve.