James Michael "Jim" Flaherty, PC, MP (born December 30, 1949 in Lachine, Quebec) is Canada's Minister of Finance; he had formerly served as Ontario's Minister of Finance.

From 1995 until 2005 he was the Member of Provincial Parliament for Whitby—Ajax, representing the Progressive Conservative Party. He was previously a cabinet minister in the government of Mike Harris, and has unsuccessfully sought the leadership of the Ontario Progressive Conservatives on two occasions.

Flaherty won the riding of Whitby—Oshawa in the federal election held January 23, 2006 as a member of the Conservative Party of Canada narrowly beating Liberal incumbent Judi Longfield. He was re-elected in 2008. Flaherty's wife Christine Elliott is currently representing Whitby-Oshawa in the Ontario Legislature.