Jacob Austin PC CM OBC (born March 2, 1932) is a former Canadian politician and former member of the Senate of Canada.

[2] In the early 1960s, Austin's political career began when he served as executive assistant to Arthur Laing while he was Minister of Northern Affairs and National Resources.

While he was in Ottawa, Paul Martin Sr. asked him to serve on the legal team that negotiated the Columbia River Treaty on behalf of the government.

[2] In 1970, he was appointed deputy minister of Energy, Mines and Resources and was part of the first Canadian trade mission sent to the People's Republic of China.

He returned to the Cabinet of Canada in 2003 when Prime Minister Paul Martin appointed him Leader of the Government in the Senate, in which capacity he served until the Liberal defeat in the 2006 election.