Tatarsky District () is an administrative and municipal district (raion), one of the thirty in Novosibirsk Oblast, Russia. It is located in the west of the oblast. The area of the district is . Its administrative center is the town of Tatarsk (which is not administratively a part of the district). Population: 15,875 (2010 Census);
Within the framework of administrative divisions, Tatar District is one of the thirty in the oblast. The town of Tatarsk serves as its administrative center, despite being incorporated separately as an administrative unit with the status equal to that of the districts.
As a municipal division, the district is incorporated as Tatar Municipal District, with the Town of Tatarsk being incorporated within it as Tatarsk Urban Settlement.