The trial for Anders Behring Breivik, the perpetrator of the 2011 Norway attacks, begins in Oslo, Norway.

The trial of Anders Behring Breivik, the perpetrator of the 2011 Norway attacks, took place between 16 April and 22 June 2012 in Oslo District Court. Breivik was sentenced to 21 years of preventive detention on 24 August 2012. 170 media organisations were accredited to cover the proceedings, involving some 800 individual journalists.

Anders Behring Breivik, officially Far Skaldigrimmr Rauskjoldr av Northriki and formerly, is a Norwegian neo-Nazi terrorist and mass murderer. He carried out the 2011 Norway attacks in which he killed eight people by detonating a van bomb at Regjeringskvartalet in Oslo, and then killed 69 participants of a Workers' Youth League (AUF) summer camp, in a mass shooting on the island of Utøya.

The 2011 Norway attacks, also called 22 July or 22/7 in Norway, were two domestic terrorist attacks by far-right extremist Anders Behring Breivik against the government, the civilian population, and a Workers' Youth League (AUF) summer camp, in which a total of 77 people were killed.

Oslo is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of 709,037 in 2022, while the city's greater urban area had a population of 1,064,235 in 2022, and the metropolitan area had an estimated population of 1,546,706 in 2021.