Jeff Rubin (born August 24,1954) is a Canadian economist and author. He is a former chief economist at CIBC World Markets. He graduated from McGill University with a Masters in Economics after completing his Economics B.A. at University of Toronto. He began his career as an economist at the Ontario Government Treasury Department where he was responsible for projecting future interest rates. He moved on to the brokerage firm Wood, Gundy which was taken over by CIBC and became first CIBC Wood Gundy and then CIBC World Markets. He has accurately predicted fluctuations in interest rates and the value of the Canadian dollar. In the early 1990s he came to prominence projecting a major decline in the Ontario real estate market. He was one of the first economists to accurately predict soaring oil prices back in 2000 and is now a popular commentator on oil depletion and its economic repercussions. He lives in Toronto and recently began to post on Twitter as @jeffrubin. He is an avid fisherman known for exotic trips to Northern Canada (B.C. and Yukon)who frequently uses fishing analogies and references to his own fishing experiences, in his writings.

Rubin began at CIBC World Markets in 1988, and served as chief ecomonist from 1992 to 2009, when he resigned.

He authored the best selling 2009 book Why Your World Is About to Get a Whole Lot Smaller: Oil and the End of Globalization.