Mark MacGuigan

The Honourable Mark MacGuigan PC

17th Secretary of State for External Affairs
In office March 3, 1980 – September 9, 1982
Prime Minister	Pierre Trudeau
Preceded by	Flora MacDonald
Succeeded by	Allan MacEachen
Minister of Justice and Attorney General of Canada
In office September 10, 1982 – June 29, 1984
Prime Minister	Pierre Trudeau
Preceded by	Jean Chrétien
Succeeded by	Donald Johnston
Judge Federal Court of Canada (Appeals Division)
In office June 29, 1984 – January 12, 1998 (death)
Appointed by	Pierre Trudeau
Member of the Canadian Parliament for Windsor-Walkerville
In office June 25, 1968 – June 29, 1984
Preceded by	Electoral District created
Succeeded by	Howard McCurdy
Personal details
Born	Mark Rudolph MacGuigan (1931-02-17)February 17, 1931 Charlottetown, Prince Edward Island
Died	January 12, 1998(1998-01-12) (aged 66) Oklahoma City, Oklahoma
Nationality	Canadian
Political party	Liberal
Parents	Mark Rudolph MacGuigan, Sr. (father) Agnes Violet Trainor (mother)
Alma mater	Saint Dunstan's University The University of Toronto Osgoode Hall Law School Columbia University
Profession	Lawyer Member of Parliament Judge

Mark Rudolph MacGuigan, PC (February 17, 1931 – January 12, 1998) was a Canadian academic and politician.

Born in Charlottetown, Prince Edward Island, the son of Mark Rudolph MacGuigan and Agnes Violet Trainor, he was educated at Saint Dunstan's University (B.A.), the University of Toronto (M.A., Ph.D. (Philosophy)), Osgoode Hall Law School (LL.B.), and Columbia University (LL.M., J.S.D.) He was a professor at Osgoode and the University of Toronto and was dean of law at the University of Windsor.

MacGuigan was elected as a Liberal Party candidate to the Canadian House of Commons in the 1968 general election. He was re-elected in 1972, 1974, 1979, and 1980.

In 1976, he took a turn at provincial politics and ran for the leadership of the Ontario Liberal Party. He lost to Stuart Smith at the leadership convention.