Thorbjørn Jagland (help·info) (born 5 November 1950, né Johansen) is a Norwegian politician for the Labour Party, currently serving as the Secretary-General of the Council of Europe (since 2009). He is also the Chairman of the Norwegian Nobel Committee (since 2009), and as such responsible for awarding the Nobel Peace Prize.

Jagland served as Prime Minister of Norway from 1996 to 1997, as Minister of Foreign Affairs from 2000 to 2001 and as President of the Storting from 2005 to 2009. Prior to becoming Prime Minister, Jagland served as party secretary from 1986 to 1992, and subsequently party leader until 2002, when he was succeeded by Jens Stoltenberg. He did not run for reelection to parliament in 2009.

Jagland's cabinet, albeit short-lived, was marked by controversies from the beginning to the end, with two ministers being forced to withdraw following personal scandals. Jagland, who was much ridiculed in the media for his quotes and statements and frequently portrayed as incompetent, resigned following the 1997 election, as a consequence of his much ridiculed 36.9 ultimatum, even though his party won the most votes. In 2010 a group of forty prominent historians ranked Jagland as the weakest Norwegian prime minister since the end of the Second World War; two years before, his predecessor Gro Harlem Brundtland had criticized his premiership in harsh terms and described Jagland as "stupid". Also his term as Foreign Minister was marked by controversies, due to his perceived lack of qualification for the office and quotes and statements that were considered inappropriate. Jagland was widely perceived to have been passed over when Jens Stoltenberg formed his second cabinet in 2005. In 2009 he was elected as the Secretary General of the Council of Europe.