| En Name: | Yustinsky District |
| Ru Name: | Юстинский район |
| Loc Name1: | Үстин район |
| Loc Lang1: | Kalmyk |
| Image View: | Tsagan Aman 2016 6.jpg |
| Coordinates: | 47.55°N 89°W |
| Federal Subject: | Republic of Kalmykia |
| Adm Data As Of: | June 2011 |
| Adm Ctr Type: | settlement |
| Adm Ctr Name: | Tsagan Aman |
| Selsoviet Type1: | Rural administrations |
| No Of Selsoviets Type1: | 7 |
| No Of Rural Localities: | 14 |
| Mun Data As Of: | March 2015 |
| Mun Formation1: | Yustinsky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 0 |
| Mun Formation1 No Of Rural Settlements: | 7 |
| Area As Of: | June 2011 |
| Area Km2: | 7995.61 |
| Pop 2010Census: | 10585 |
| Urban Pop 2010Census: | 0% |
| Rural Pop 2010Census: | 100% |
| Established Date: | 1938 |
| Website: | http://85246.rk08.ru |
| Date: | September 2012 |
| Population of Yustinsky District | |
| Label1: | 2010 Census |
| Data1: | 10,585 |
| Label2: | 2002 Census |
| Data2: | 10,506 |
| Label3: | 1989 Census |
| Data3: | 15,568 |
| Label4: | 1979 Census |
| Data4: | 13,941 |
Yustinsky District (Russian: Юсти́нский райо́н; Kalmyk; Oirat: Үстин район, Üstin rayon) is an administrative[1] and municipal[2] district (raion), one of the thirteen in the Republic of Kalmykia, Russia. It is located in the northeast and east of the republic. The area of the district is 7995.61km2. Its administrative center is the rural locality (a settlement) of Tsagan Aman. As of the 2010 Census, the total population of the district was 10,585, with the population of Tsagan Aman accounting for 56.9% of that number.
The district was established in 1938.
Within the framework of administrative divisions, Yustinsky District is one of the thirteen in the Republic of Kalmykia. The district is divided into seven rural administrations which comprise fourteen rural localities. As a municipal division, the district is incorporated as Yustinsky Municipal District. Its seven rural administrations are incorporated as seven rural settlements within the municipal district. The settlement of Tsagan Aman serves as the administrative center of both the administrative and municipal district.