Sir William Ralph Meredith, (March 31, 1840 – August 21, 1923) was Leader of the Ontario Conservatives from 1878 to 1894, Chancellor of the University of Toronto from 1900 until his death, and Chief Justice of Ontario from 1913 until his death.
Through his principles, the "Meredith Principles", he is regarded as the founding father of the Workers' Compensation System in Ontario, the impact of which was felt throughout Canada and the United States.