Wenche Elizabeth Arntzen (born 26 June 1959) is a Norwegian lawyer and judge.
[2][3] Arntzen began her career as a consultant at the Ministry of Justice and the Police's Legal Issues section.
She attained to barrister, a lawyer with access to work with Supreme Court cases, in 1993.
Among them is her grandfather, former Director of Public Prosecutions in Norway (Norwegian: riksadvokat) Sven Arntzen.
[2] During the opening of the 2012 trial against Anders Behring Breivik, Breivik claimed that judge Arntzen was a personal friend of Hanne Harlem, sister of former prime minister Gro Harlem Brundtland, whom Breivik on day four of the trial testified had been a principal target for execution during his shooting spree at Utøya island—and whom he had wanted to decapitate on video, Al Qaeda-style—but to the question from Arntzen whether this constituted a formal assertion of conflict of interest, Breivik's main defence counsel Geir Lippestad, after cursorily conferring with Breivik, replied that it was not.