The League for Social Reconstruction was a circle of Canadiansocialist intellectuals formed in 1931 by academics advocating radical social and economic reforms and political education as a response to the Great Depression.
The LSR made its views known through the magazine New Commonwealth (formerly the Farmer's Sun, publication of the United Farmers of Ontario until purchased by Spry) and the Canadian Forum which was acquired in 1936.
The LSR dissolved in 1942 as most of its members had transferred their political activism to the CCF.