George Ramsay Cook OC FRSC (28 November 1931 – 14 July 2016) was a Canadian historian and general editor of the Dictionary of Canadian Biography. He was professor of history at the University of Toronto, 1958–1968; York University, 1969–1996; Visiting Professor of Canadian Studies, Harvard University, 1968–69; Visiting Professor, and Yale University, 1978–79 and 1997. Through his championing of so-called "limited identities", Cook contributed to the rise of the New Social History, which uses "class, gender and ethnicity" as its three main categories of analysis. Cook's conception of "limited identities" was famously formulated in an article in the International Journal in 1967, Canada's centenary year, reviewing the state of contemporary scholarship on Canadian nationalism: