Jeffrey MacKie-Mason is the Dean of the School of Information at the University of Michigan. He is also the Arthur W. Burks Collegiate Professor of Information and Computer Science at the School of Information, a Professor of Economics in the Department of Economics, and a Professor of Public Policy at the Gerald R. Ford School of Public Policy, all at the University of Michigan.

Dean MacKie-Mason was the founding Director of the STIET Program, which unites more than 30 faculty and more than 30 doctoral students in research combining economics and computer science to advance social computing, e-commerce, and the beneficial uses of the Internet. He has more than 80 peer-reviewed publications in industrial organization, digital information and Internet economics, computer science, and other areas, including corporate finance and taxation.

Dean MacKie-Mason has been consulting and testifying on liability, damages, and policy issues for antitrust and regulatory matters since the early 1980's. He specializes in high-tech industries, with extensive experience in the Internet, e-commerce, computer software, hardware and services, telecommunications, high-volume copiers, and media. Dean MacKie-Mason has testified by deposition and/or at trial in over two dozen federal cases, including at trial for the plaintiffs in ITS v. Kodak; for the defendant in Tricom v. EDS; for the plaintiffs in Valassis v. News America Corp.; for the defendant in The Service Source v. Office Depot; and for the plaintiffs in the California class action against Microsoft Corp., which ended in a $1.1 billion settlement for California consumers. He has also submitted reports and testimony in numerous regulatory proceedings, and provided antitrust economics advice to many other clients. He is on two advisory boards to the National Science Foundation, several journal editorial boards, and has testified before and advised the U.S. Department of Justice and the U.S. Federal Trade Commission.