Studies on the Left was a journal of New Left radicalism in the United States published between 1959 and 1967 in Madison, Wisconsin, and later in New York City.
Its authors, at first mostly graduate students at the University of Wisconsin, came to include most of the major figures of sixties radicalism, and not only from the United States. Writers for Studies on the Left included Martin J. Sklar, Murray Rothbard, Lee Baxandall, James Weinstein, Eleanor Hakim, Michael Lebowitz, Ronald Radosh, Gabriel Kolko, James B. Gilbert, Saul Landau, Lloyd Gardner, Eugene D. Genovese, Norm Fruchter, Staughton Lynd, Ronald Aronson, William Appleman Williams, Raymond Williams, and Tom Hayden.
The journal's republication of C. Wright Mills' "Letter to the New Left" in 1961 (originally published in New Left Review in 1960) marked one of the first uses of the "New Left" in American discourse. The journal's chief claim to theoretical distinction was in the concept of "corporate liberalism" as a descriptive term for the twentieth-century economic and political system typified by the United States and characterized by a warfare-welfare state.