Sudutuy () is a rural locality (an ulus) in Bichursky District, Republic of Buryatia, Russia. The population was 38 as of 2010.Всероссийские переписи населения 2002 и 2010 годов There is 1 street.
Geography Sudutuy is located 24 km northwest of Bichura (the district's administrative centre) by road. Petropavlovka is the nearest rural locality.Расстояние от Судутуя до Бичуры 24 км
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