Bustubayevo (; , Buà Âtñbay) is a rural locality (a village) in Nukayevsky Selsoviet, Kugarchinsky District, Bashkortostan, Russia. The population was 83 as of 2010. There are 2 streets.
Bustubayevo is located 30 km south of Mrakovo (the district's administrative centre) by road. 1-ye Tukatovo is the nearest rural locality.