Calvin Murray Sinclair CC OM MSC (Ojibway name Mizanay (Mizhana) Gheezhik; January 24, 1951 – November 4, 2024) was a Canadian politician who was a member of the Senate, and a First Nations lawyer who served as chairman of the Indian Residential Schools Truth and Reconciliation Commission from 2009 to 2015.

[10] He then worked at the Selkirk Friendship Centre as an administrator and youth worker and was elected vice president of the Manitoba Metis Federation for the Interlake Region in 1971.

[10] In 1972, he went to work for Howard Pawley Q.C., who was at that time the Member of the Legislative Assembly for Selkirk and the Attorney General of Manitoba, as his executive assistant.

[10] The AJI report was an extensive study of issues plaguing the relationship between Aboriginal people in Manitoba and the justice system and had a significant impact on law and legal policy in Canada.

[10] That report led to significant changes in pediatric cardiac surgery in Manitoba and the study of medical and systemic errors in Canada.

[4] While a judge of that court, Justice Sinclair was asked to chair Canada's Truth and Reconciliation Commission (TRC), a request he initially declined due to the expected emotional toll.

[10] After the TRC completed its final report in 2015, Sinclair announced his retirement from the bench and his intention to withdraw from public life.

He was asked by leaders of Manitoba's Indigenous community to allow them to nominate him for an appointment to Canada's Senate, and with the support of his family, he agreed.

[citation needed] He also acted as a mediator, made numerous public appearances on matters relating to Indigenous issues and the Senate of Canada, and was asked to investigate the role of the Police Services Board of Thunder Bay, Ontario, in the light of allegations of systemic racism in policing in that community.

[13] Sinclair was appointed the chair of Canada's Indian Residential Schools Truth and Reconciliation Commission in June 2009.

[4] The TRC held hundreds of public and private hearings throughout Canada and documented over 6,000 statements of Survivors and more than 200 from former staff, all of which led to the commission's massive multi-volume Final Report released on December 15, 2015.

It is one in which all Canadians are implicated.”[16] In his final speech at the release of the summary of the commission’s report, on June 2, 2015, Sinclair acknowledged that reconciliation was going to be difficult.

[citation needed] Sinclair's traditional Ojibway name was Mizanay Gheezhik, meaning "the One Who Speaks of Pictures in the Sky".