Sayantuy (; , Saianta) is a rural locality (a settlement) in Tarbagataysky District, Republic of Buryatia, Russia. The population was 138 as of 2010.Всероссийские переписи населения 2002 и 2010 годов There are 9 streets.
Geography Sayantuy is located 29 km north of Tarbagatay (the district's administrative centre) by road. Voznesenovka is the nearest rural locality.Расстояние от Саянтуя до Тарбагатая 29 км
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