Institute for International Research is a subsidiary of Informa Plc. It grew from its founding to 1973 to become one of the world's largest conference providers. It has been part of the Informa Group since 2005.

As the U.S. subsidiary of the world-renowned Institute for International Research is among the most recognized and trusted providers of trade conferences and expositions; seminars; training events; and specialized business information and networking experiences in America.

In 1989, IIR Inc. in the United States acquired institutions in order to enter the seminar and training business. IIR USA conceives and executes nearly 200 proprietary events annually supporting a portfolio of major industries, professions and fields of business interest.