Leeds was an electoral district of the Legislative Assembly of the Parliament of the Province of Canada, in the eastern area of Canada West (now Ontario). Leeds was created in 1841, upon the establishment of the Province of Canada by the union of Upper Canada and Lower Canada. It was based on Leeds County, located on the north shore of the Saint Lawrence River. Leeds was represented by one member in the Legislative Assembly. It was abolished in 1867, upon the creation of Canada and the province of Ontario.