Circana, Inc., formerly known as IRI Worldwide and The NPD Group, is an American market research and technology company headquartered in Chicago. In 2017, NPD ranked as the 8th largest market research company in the world, according to the independent AMA Gold Report Top 50 report. The NPD Group operates in 20 countries, across more than 20 industries. The current name, Circana, was adopted in 2023 after the company's merger with IRI.