A number of universities and organizations provide access to free business case studies. Below are some of the best known sources.
Acadia Institute of Case Studies (archived link)The Acadia Institute of Case Studies is a non-profit centre in the School of Business Administration, Acadia University. The Institute's focus is on entrepreneurship and small business operations.
Arthur Andersen Case Studies in Business Ethics (Carnegie Mellon)From 1987-1994, Arthur Andersen funded a $5 million joint project with 525 universities to raise awareness of business ethics. This collection of 90 case studies is one product of that effort. All participating universities (includes BU) have license to use these materials and reproduce them as needed for instructional purposes.
Case CentreCase Centre offers a wide range of free cases produced by many prominent schools and organizations across the globe. You must be registered and logged into the website to access free cases. Once logged in, you can use "show only items in the free case collection" tick box in the product search to search all free cases.
Ethics Unwrapped - McCombs School of Business, The University of Texas at AustinMore than 50 case studies match ethics concepts to real world situations. From journalism to performing arts to foreign policy to scientific research to social work, these cases explore a range of current and historic ethical dilemmas, their motivating biases, and their consequences. Each case includes discussion questions, related videos, and a bibliography for further reading.
IBIMA Business ReviewPeer-reviewed, open access journal that publishes publishing quality Case Studies in all business fields that significantly contribute to practice and support continuous learning efforts in organizations.
INSEAD Publishing: CasesCurrently provides access to 15 free case studies. Registration is required to access the cases.
Internet ArchiveAccess hundreds of digitized books that include business case studies on a wide variety of topics.
Journal of Business Cases and ApplicationsGoal is to share cases and exercises developed for classroom use in any area of business education. Subjects include Accounting, Business Administration, Business Law, E-Commerce, Economics, Entrepreneurship, Ethics, Decision Sciences, Finance, Information Systems, International Business, Management, Marketing, Real Estate, Teaching and Business Education, etc.
MIT Sloan - Case StudiesCollection of teaching case studies developed by MIT Sloan faculty and students. May be downloaded, copied, distributed free of charge by anyone through creative commons license. Topics include entrepreneurship, leadership and ethics, operations management, strategy, sustainability, and system dynamics.
SSRN: Management Educator: Courses, Cases & Teaching eJournal"Promotes innovative approaches to curricular development, course content and delivery systems, student learning, and other educational issues that are important to management faculty to meet the growing demand for discussions, research and analysis on teaching management."