Alexander Fraser (August 24, 1824 – 1883) was an Ontario businessman and political figure. He represented Northumberland West in the Legislative Assembly of Ontario from 1867 to 1871.
He was born in Inverness, Scotland in 1824 and was educated at the King's College, University of Aberdeen. He was a woollen manufacturer. He was also a director of the Cobourg, Peterborough and Marmora Railway.