Bryan McAllister’s personal reference notebook
September 12, 2026Short & citedBlog
Civic Viewpoint.
A quiet encyclopedia with a personal desk
Kept by Bryan McAllister — short guides, clear facts, and the Canadian angle when it matters.
Civic Brief • Law

Louise Arbour

Louise Arbour is a Canadian jurist, lawyer, and former international prosecutor who has served at the Supreme Court of Canada, in senior United Nations human-rights roles, and as chief prosecutor for the UN tribunals for the former Yugoslavia and Rwanda.

Updated September 12, 20261 min readCited sources

Louise Arbour is a Canadian jurist and former UN war-crimes prosecutor who became the 31st governor general of Canada in 2026. She is known for her work on international human rights and the Supreme Court of Canada.

Early life and education

Louise Arbour was born on February 10, 1947, in Montréal, Quebec. She earned a Licentiate in Law from the Université de Montréal in 1970 and was called to the Quebec Bar in 1971, later to the Ontario Bar in 1977.

International criminal law and human rights

From 1996 to 1999, Arbour served as chief prosecutor for the UN tribunals for the former Yugoslavia and Rwanda, leading major war-crimes prosecutions. She later served as UN High Commissioner for Human Rights from 2004 to 2008 and as the UN Secretary-General’s special representative for international migration from 2017 to 2018.

Governor general of Canada

In 2026, Arbour was appointed governor general of Canada and sworn in on June 8, 2026, becoming the 31st person to hold the office and the oldest in Canadian history. She succeeded Mary Simon.

In short

  • Served on the Supreme Court of Canada from 1999 to 2004.
  • Chief prosecutor for UN tribunals for Yugoslavia and Rwanda.
  • UN High Commissioner for Human Rights from 2004 to 2008.
  • Appointed governor general of Canada in 2026.
Canadian angle

Louise Arbour is a major Canadian legal and public figure whose career spans the Supreme Court of Canada, Canadian honours, and the office of governor general. For Canadian readers, she is also significant as an internationally recognized jurist from Montréal who shaped human-rights and international-criminal-law practice.

Quick questions

Who is Louise Arbour?
Louise Arbour is a Canadian jurist, lawyer, and diplomat who served on the Supreme Court of Canada, led UN human-rights work, and became governor general of Canada in 2026.
What is Louise Arbour known for?
She is known for senior roles in international criminal justice, including prosecuting cases before the UN tribunals for Rwanda and the former Yugoslavia, and for serving as UN High Commissioner for Human Rights.
When did Louise Arbour become governor general?
She was sworn in on June 8, 2026, as the 31st governor general of Canada.

Sources

  1. Governor General of Canada — https://www.gg.ca/en/governor-general/governor-general-louise-arbour/biography
    Supports: Appointment as governor general, swearing-in date, office number, birthplace, education, and career overview
  2. Supreme Court of Canada — https://www.scc-csc.ca/about-apropos/judges-juges/list-liste/louise-arbour/
    Supports: Service as judge of the Supreme Court of Canada and dates of tenure
  3. Borden Ladner Gervais — https://www.blg.com/en/people/a/arbour-louise
    Supports: Roles as senior counsel, UN High Commissioner for Human Rights, chief prosecutor, and prior judicial appointments
  4. Wikipedia — https://en.wikipedia.org/wiki/Louise_Arbour
    Supports: Broad chronology of career, including UN migration role and later public service
  5. Prime Minister of Canada — https://www.pm.gc.ca/fr/nouvelles/notes-dinformation/2026/05/05/lhonorable-louise-arbour
    Supports: 2026 appointment announcement and career summary