Khilgantuy (; , Khilganta) is a rural locality (an ulus) in Kyakhtinsky District, Republic of Buryatia, Russia. The population was 161 as of 2010.Всероссийские переписи населения 2002 и 2010 годов There are 6 streets.

Geography Khilgantuy is located 77 km northeast of Kyakhta (the district's administrative centre) by road. Ust-Kiran is the nearest rural locality.Расстояние от Хилгантуя до Кяхты 77 км

References