| En Name: | Ust-Ishimsky District |
| Ru Name: | Усть-Ишимский район |
| Image View: | Confluence of Siberian rivers - the Ishim flows into the Irtysh.jpg |
| Coordinates: | 57.6944°N 71.1708°W |
| Image Coa: | Усть-Ишимский район.png |
| Federal Subject: | Omsk Oblast |
| Adm Data As Of: | December 2009 |
| Adm Ctr Type: | selo |
| Adm Ctr Name: | Ust-Ishim |
| Selsoviet Type1: | rural okrug |
| No Of Selsoviets Type1: | 13 |
| No Of Rural Localities: | 51 |
| Mun Data As Of: | July 2011 |
| Mun Formation1: | Ust-Ishimsky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 0 |
| Mun Formation1 No Of Rural Settlements: | 13 |
| Area Km2: | 7846 |
| Pop 2010Census: | 13480 |
| Urban Pop 2010Census: | 0% |
| Rural Pop 2010Census: | 100% |
| Website: | http://www.ust-ishim.narod.ru/ |
| Date: | September 2012 |
Ust-Ishimsky District (Russian: Усть-Иши́мский райо́н) is an administrative[1] and municipal[2] district (raion), one of the thirty-two in Omsk Oblast, Russia. It is located in the northwest of the oblast. The area of the district is 7846km2.[3] } Its administrative center is the rural locality (a selo) of Ust-Ishim, which, as its name indicates, is located at the confluence of the Ishim River with the Irtysh.
Population: 13,480 (2010 Census); The population of Ust-Ishim accounts for 35.6% of the district's total population.
The Ust'-Ishim man, an ancient skeleton dated to 45,000 years before present, was discovered on the bank of the Irtysh River in Ust-Ishimsky District.