| En Name: | Ust-Udinsky District |
| Ru Name: | Усть-Удинский район |
| Image View: | Речной порт - panoramio (1).jpg |
| Coordinates: | 55.65°N 140°W |
| Image Coa: | Coat of Ust-Udinsky District.jpg |
| Federal Subject: | Irkutsk Oblast |
| Adm Data As Of: | December 2011 |
| Adm Ctr Type: | work settlement |
| Adm Ctr Name: | Ust-Uda |
| No Of Urban-Type Settlements: | 1 |
| No Of Rural Localities: | 24 |
| Counts Ref: | [1] |
| Mun Data As Of: | November 2012 |
| Mun Formation1: | Ust-Udinsky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 1 |
| Mun Formation1 No Of Rural Settlements: | 13 |
| Area Km2: | 20400 |
| Pop 2010Census: | 14385 |
| Urban Pop 2010Census: | 36.0% |
| Rural Pop 2010Census: | 64.0% |
| Website: | http://adminust-uda.ru/ |
| Date: | February 2013 |
Ust-Udinsky District (Russian: Усть-Удинский райо́н) is an administrative district, one of the thirty-three in Irkutsk Oblast, Russia.[2] Municipally, it is incorporated as Ust-Udinsky Municipal District.[3] The area of the district is 20400km2.[4] Its administrative center is the urban locality (a work settlement) of Ust-Uda.[5] Population: 16,747 (2002 Census); The population of Ust-Uda accounts for 36.0% of the district's total population.