Joseph Mario Jacques Olivier, PC (born April 14, 1944) is a Canadian politician, businessman and labour leader.
In 1970, Prime Minister Pierre Trudeau appointed Olivier as an aide to the Canadian Cabinet on labour relations.
In January 1984, Trudeau appointed Olivier to the Cabinet as Minister of State for fitness and amateur sport.
Olivier was dropped from Cabinet in June when John Turner became the new prime minister.
This merger was partially reversed after municipal referendums and was seen by many to be a failure on Olivier's part to sell the new Mega-City.