Maslyaninsky District (Russian: Масля́нинский райо́н) is an administrative[1] and municipal[5] district (raion), one of the thirty in Novosibirsk Oblast, Russia.

It is located in the east of the oblast.

The area of the district is 3,453 square kilometers (1,333 sq mi).

[citation needed] Its administrative center is the urban locality (a work settlement) of Maslyanino.

[3] Barsukovskaya Cave is a Karst cave, the habitat of the largest wintering colony of bats in the southeast part of Western Siberia.