Eveno-Bytantaysky National District (; ) is an administrative and municipal district (raion, or ulus), one of the thirty-four in the Sakha Republic, Russia. The area of the district is . Its administrative center is the rural locality (a selo) of Batagay-Alyta. Population: 2,761 (2002 Census). The population of Batagay-Alyta accounts for 63.9% of the district's total population.