Ulbugay (; , Ulbagai) is a rural locality (an ulus) in Tunkinsky District, Republic of Buryatia, Russia. The population was 92 as of 2010.Всероссийские переписи населения 2002 и 2010 годов There are 5 streets.

Geography Ulbugay is located 62 km northeast of Kyren (the district's administrative centre) by road. Tagarkhay is the nearest rural locality.Расстояние от Кырена до Улбугая 62 км

References