Angarsk (Russian: Ангарск, IPA: [ɐnˈgarsk]) is a city and the administrative center of Angarsky District of Irkutsk Oblast, Russia, located on the Kitoy River, 51 kilometers (32 mi) from Irkutsk, the administrative center of the oblast. Population: 221,296 (2021 census); 233,567 (2010 census); 247,118 (2002 census); 265,835 (1989 Soviet census).

Angarsk was founded in 1948 as an industrial community and was granted city status on May 30, 1951.

Within the framework of administrative divisions, Angarsk serves as the administrative center of Angarsky District, to which it is directly subordinated. As a municipal division, the city of Angarsk and thirteen rural localities of Angarsky District are incorporated as Angarskoye Urban Okrug.

In December 1991, the first elections for the head of the administration of the city of Angarsk took place. Alexander Shevtsov was elected mayor.

On April 1, 1994, Vladimir Nepomnyashchy took over as mayor.

In April 1998, Viktor Novokshenov was elected to govern the city.

On April 7, 2002, the position of the head of the Angarsk municipal entity (AMO) was taken by Yevgeny Kanukhin. On October 9, 2005, he was elected to the position of the head of the administration of the city of Angarsk. Andrei Kozlov got the office of the mayor of AMO (municipal district).

As a result of the elections on December 2, 2007, Leonid Mikhaylov was elected to the position of the head of the administration of the Angarsk urban settlement.