Kubalyak (; , Kübäläk) is a rural locality (a village) in Michurinsky Selsoviet, Sharansky District, Bashkortostan, Russia. The population was 31 as of 2010. There are two streets.
Kubalyak is located 9 km northeast of Sharan (the district's administrative centre) by road. Karazybash is the nearest rural locality.