Tastuba (Russian: Тастуба; Bashkir: Таҙтүбә, Taźtübä) is a rural locality (a selo) in Voznesensky Selsoviet, Duvansky District, Bashkortostan, Russia.

Tastuba is located 37 km northwest of Mesyagutovo (the district's administrative centre) by road.

Voznesenka is the nearest rural locality.

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