Guy Lauzon (French: [gi lozɔ̃]; April 6, 1944 – June 22, 2025) was a Canadian politician who served as the member of Parliament for the riding of Stormont—Dundas—South Glengarry from 2004 to 2019 as a member of the Conservative Party.

Lauzon was born in St. Andrew's West, Ontario and his family roots in the region can be traced to the 19th century.^{[citation needed]}

Lauzon spent over twenty-two years in the federal public service and served as a local union president of the Public Service Alliance of Canada. During the 1990s, he served as chair of the HDRC's United Way and multiple sclerosis research funding campaigns. He retired in 1993, and was until his death, the general manager of Tri-County Protein, a soybean processing plant in Winchester, Ontario.

In the 2000 federal election, Lauzon ran as the Canadian Alliance candidate in Stormont—Dundas—Charlottenburgh, and finished second behind incumbent Liberal Bob Kilger.

The Canadian Alliance and Progressive Conservative Party were merged in 2003, and Lauzon ran as a Conservative in the 2004 election and garnered almost 4,000 votes more than his nearest rival, incumbent Bob Kilger.

Lauzon was appointed the Conservative Party critic for the Treasury Board and Official Languages Committee.^{[citation needed]}

In the 2006 federal election, Lauzon was chosen once more to represent the Conservative Party as the candidate for Stormont—Dundas—South Glengarry. He won 54.7% of the popular vote, defeating his nearest challenger, Tom Manley, by over 14,000 votes.

In 2006, Lauzon was appointed to the deputy whip position of the Conservative party.