Oshya-Tau (; , UÃ Âyataw) is a rural locality (a village) in Novoartaulsky Selsoviet, Yanaulsky District, Bashkortostan, Russia. The population was 19 as of 2010. There is 1 street.
Oshya-Tau is located 23 km northwest of Yanaul (the district's administrative centre) by road. Novy Artaul is the nearest rural locality.