Mark Warner (Canadian politician)

Mark A. A. Warner (born 1964) is a Canadian international trade and competition (antitrust) lawyer. He was previously with the Toronto firm Fasken Martineau DuMoulin and with the Government of Ontario.

Warner was chosen in February 2007 as the Conservative Party of Canada's candidate for the House of Commons in the riding of Toronto Centre by-election, following the retirement of Bill Graham. On October 30, the national council of the party replaced him as its candidate because of differences between Warner's campaign and the national party's campaign over social and urban issues.