The Institution of Engineering and Technology (IET) is a professional engineering organization formed in 2006 from the merger of the Institution of Electrical Engineers and the Institute of Incorporated Engineers. With over 156,000 members in 148 countries, the IET is headquartered in London and Stevenage, England. It acts as a licensed member institution of the Engineering Council and is registered as a charity in England, Wales, and Scotland.

The IET provides professional registration for various engineering titles, including Chartered Engineer and Engineering Technician. It publishes technical journals and standards, offers access to extensive knowledge resources, and organizes events for networking and knowledge exchange. The institution also maintains historical archives that document the evolution of engineering and technology. Through its community outreach, the IET inspires engineers to tackle societal challenges and promotes professional development across multiple engineering disciplines.