William M. Landes (born c. 1939) is an American economist who has written about the economic analysis of law. He is a fellow of the American Academy of Arts and Sciences, which cited him for his work in the field. Landes also is the original founder (with Richard Posner and Andrew Rosenfield) of Lexecon, a consulting firm.
Landes is also a board member of the Smart Museum of Art, which is located in the University of Chicago's Hyde Park Campus. The Elisabeth & William M. Landes Gallery within the Smart Museum of Art features works created between the 1880s and the late 1950s.
Landes is a renowned collector of left-wing and homoerotic art.
The Economic Structure of Intellectual Property Law (Harvard Univ. Press 2003) (with Richard A. Posner).
"The Economics of Legal Disputes Over The Ownership of Works of Art and Other Collectibles, " in Essays in the Economics of the Arts, V. A. Ginsburgh & P.-M. Menger, eds. (Elsevier Science, 1996) (with Richard A. Posner).
The Economic Structure of Tort Law, (Harvard Univ. Press 1987) (with Richard A. Posner).
"Causation in Tort Law: An Economic Approach," Journal of Legal Studies (January 1983) (with Richard A. Posner).
"An Economic Theory of Intentional Torts," International Review of Law and Economics (December 1981) (with Richard A. Posner).
"The Positive Economic Theory of Tort Law," Georgia Law Review (Summer 1981) (with Richard A. Posner).
Essays in the Economics of Crime and Punishment, (National Bureau of Economic Research 1974)(edited with Gary S. Becker).