Lars Göran Tomas Lambertz (born 17 February 1950) was the Chancellor of Justice (Swedish: justitiekansler) in Sweden between 2001 and 2009. He was serving as a judge on the Supreme Court of Sweden between 2009 and 2017.

Lambertz was born in Kisa in Östergötland County. He received a Candidate of Law (Swedish: juris kandidat) from Uppsala University in 1976. He became an Assessor at the Svea Court of Appeal (Swedish: Svea hovrätt) and was employed at the Swedish Ministry of Justice the same year. In 1994 Lambertz was appointed as deputy director-general (Swedish: departementsråd) and in 1997 as director-general for legal affairs (Swedish: rättschef) at the Ministry of Justice. He was appointed as Chancellor of Justice on 1 October 2001. He stepped down in 2009, becoming a judge in the supreme court instead.

Göran Lambertz has received much attention in Swedish media. No chancellor of justice before him has been so well known to the people.^[1] This has also resulted in much criticism against him.

He refused to investigate the antisemitic character of the Yassin tapes in the Stockholm Mosque which led to international criticism.^[2][3][4][5]

As a supreme court judge, he still defends his 2006 decision not to act in the case of Thomas Quick.^[6]

Lambertz was married to Susanne Lambertz, who worked as a microbiologist, from 1975 to her death in 2018. The wedding, that was small scale, took place in Paris.^[7]