IAV GmbH (, literal Engineer Society Automobil and Traffic), abbreviated to IAV, is an engineering company in the automotive industry, designing products for powertrain, electronics and vehicle development. Founded in Berlin in 1983 by Prof. Dr. Hermann Appel as a university-affiliated research institute, the company employs over 5,000 members of staff, and supplies automobile manufacturers and component suppliers. In addition to development centres in Berlin, Chemnitz and Gifhorn, IAV operates at sites in France, United Kingdom, Italy, Russia, China, India, Japan, South Korea, Brazil, Mexico and the United States.
Clients include the Volkswagen Group, BMW, PSA Peugeot Citroën, Fiat, Ford Motor Company, General Motors, Porsche and Toyota. Component manufacturer clients include Robert Bosch GmbH, Delphi, Continental AG and ZF Group.