Alexandre Dufresne (April 20, 1818 – after 1877) was a merchant and political figure in Quebec.
He represented Iberville in the Legislative Assembly of the Province of Canada from 1861 to 1866.
He was born in Belœil, Quebec, the son of Jean-Baptiste Dufresne and Ursule Poirier.
Around 1864, he helped establish a branch of the Saint-Jean-Baptiste Society in the region.
Dufresne ran unsuccessfully for a seat in the Canadian House of Commons and the Quebec assembly in 1867.