Jeffrey K. MacKie-Mason is Arthur W. Burks Collegiate Professor of Information and Computer Science at the University of Michigan, a professor in the School of Information, a professor in the School of Public Policy, and a professor in the Department of Economics. He is also associate dean for academic affairs in the School of Information.

He was also the founding director of the Program for Research on the Information Economy at U-M. He also founded and is the past director of the Socio-Technical Infrastructure for Electronic Transactions (STIET) doctoral fellowship program.

MacKie-Mason is well known for his pioneering work on the economics of the Internet. He also works on the economics of other information technologies and of competition in high-technology markets. His recent work focuses on the economics of information content and usage, including projects on spam reduction, peer-to-peer resource sharing, and incentives to increase information security. He was the research director for the first large-scale field experiment on electronic commerce for electronic access to scholarly journals (PEAK).

He has consulted to AT&T, Sun Microsystems, America OnLine, EDS, Bell Atlantic, Intergraph, GTE, Compuware, SBC, and other information technology companies.

He has also advised the National Science Foundation, the U.S. Department of Justice, the U.S. Federal Communications Commission, and other government agencies. His publications appear in scholarly journals in the areas of economics, computer science, and library science, reflecting the multidisciplinary nature of his research.

His teaching includes courses on information policy, the economics of information, information in choice and learning, and antitrust.

Recent projects have included "Practical Strategic Reasoning for Intractable Games," NSF, 2005-2008, with Michael Wellman; "Computational Markets for Decentralization of Complex Time-Dependent Activities,", NSF, 2004-2007; "Strategic Positioning in Information Product Space," NSF, 2001-2004, with Ed Durfee; "Market-Based Adaptive Architectures for Information Survivability" (with Michael Wellman and Sugih Jamin, DARPA, 1997-2000); "Pricing Electronic Scholarly Information" (Council on Library Resources, 1997-1999); and "The Economics of the Internet" (with Hal Varian; NSF, 1994-1997).

MacKie-Mason serves or has served on the editorial boards of the RAND Journal of Economics; Netnomics: Economic Research and Electronic Networking; Telecommunications Systems; Electronic Commerce Research; and Information Economics and Policy. His professional service has included chair of the Program Committee of the 25th Annual Telecommunications Policy Research Conference (1997); program co-chair of the First International Conference on Information and Computational Economies (1998); program co-chair of the Second ACM Conference on Electronic Commerce (2001); and general chair of the Eighth ACM Conference on Electronic Commerce (2007). He was also a research associate at the National Bureau of Economic Research in Cambridge, Massachusetts.