Stéphan Tremblay (born November 4, 1973) is a former politician in Quebec, Canada.
He won a by-election in 1996 and succeeded Lucien Bouchard as Member of Parliament for the Lac-Saint-Jean electoral district.
In 2002, he left federal politics and won a provincial by-election on June 17, 2002 as a Parti Québécois candidate.
In 1998, he removed his green upholstered chair from the Canadian House of Commons and returned with it to his Quebec riding in protest of the gaps between the rich and the poor.
In August 2004, Tremblay was injured when the small plane he was flying crashed near Alma, Quebec after hitting Hydro-Québec's high-voltage power lines.