Bolotninsky District (Russian: Боло́тнинский райо́н) is an administrative and municipal district (raion), one of the thirty in Novosibirsk Oblast, Russia. It is located in the northeast of the oblast. The area of the district is 3,400 square kilometers (1,300 sq mi). Its administrative center is the town of Bolotnoye. Population: 29,365 (2010 Census); 32,348 (2002 census); 36,236 (1989 Soviet census). The population of Bolotnoye accounts for 56.4% of the district's total population.