| En Name: | Mamontovsky District |
| Ru Name: | Мамонтовский район |
| Image View: | П.Комсомольский, Мамонтовский район, Алтайский край. Корчинский элеватор. - panoramio.jpg |
| Coordinates: | 52.7°N 119°W |
| Federal Subject: | Altai Krai |
| Adm Data As Of: | September 2015 |
| Adm Ctr Type: | selo |
| Adm Ctr Name: | Mamontovo |
| Selsoviet Type1: | Selsoviets |
| No Of Selsoviets Type1: | 13 |
| No Of Rural Localities: | 22 |
| Mun Data As Of: | June 2014 |
| Mun Formation1: | Mamontovsky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 0 |
| Mun Formation1 No Of Rural Settlements: | 13 |
| Area Km2: | 2305.2 |
| Pop 2010Census: | 23412 |
| Urban Pop 2010Census: | 0% |
| Rural Pop 2010Census: | 100% |
| Established Date: | May 27, 1924 |
| Website: | http://mamontovo22.ru |
| Date: | May 2017 |
| Bodystyle: | width:23.5em |
| Population of Mamontovsky District | |
| Label1: | 2010 Census |
| Data1: | 23,412 |
| Label2: | 2002 Census |
| Data2: | 26,102 |
| Label3: | 1989 Census |
| Data3: | 26,092 |
| Label4: | 1979 Census |
| Data4: | 26,032 |
Mamontovsky District (Russian: Ма́монтовский райо́н) is an administrative[1] and municipal[2] district (raion), one of the fifty-nine in Altai Krai, Russia. It is located in the center of the krai. The area of the district is 2305.2km2.[3] Its administrative center is the rural locality (a selo) of Mamontovo. As of the 2010 Census, the total population of the district was 23,412, with the population of Mamontovo accounting for 37.5% of that number.
Lakes Gorkoye and Bolshoye Ostrovnoye are located in the district.[4] [5]
