Estosadok, sometimes spelled Esto-Sadok or Estosadoc (Russian: Э́стосадо́к or Э́сто-Садо́к; Estonian: Eesti Aiake, lit. Little Estonian Garden) is a rural locality (a selo) under the administrative jurisdiction of Adlersky City District of the City of Sochi in Krasnodar Krai, Russia, located on the Mzymta River, 4 kilometers (2.5 mi) upstream from Krasnaya Polyana. The population of Estosadok is 890 people. It was founded in 1886 by thirty-six Estonian families who arrived to Krasnaya Polyana to render habitable the lands formerly settled by Sadz.