IET

IET can refer to:

Organizations

 * Institute of Educational Technology, part of the Open University
 * Institution of Engineering and Technology, a UK-based professional engineering institution
 * Institute of Engineers and Technicians, which became part of the Institution of Incorporated Engineers in 1998 (which then became part of the Institution of Engineering and Technology in 2006)
 * Institute of Engineering and Technology of Lucknow, India
 * University Institute of Engineering and Technology, Kanpur University of Kanpur, India, formerly known as IET Kanpur
 * Institute of Engineering Technology, Sri Lanka, a Government higher education institute that providing NDES (National Diploma in Engineering Sciences) Award in Sri Lanka
 * IET Bhaddal, an engineering institute based in Bhaddal, Punjab
 * Islamic Educational Trust, Islamic organization in Nigeria
 * Institute of Engineering and Technology, Ayodhya of Faizabad, Uttar Pradesh, India

Persons

 * iET (musician), a singer-songwriter from the Netherlands

Processes

 * Impulse excitation technique
 * Initial Entry Training, the technical term for United States Army Basic Training
 * Interval exchange transformation
 * Interest Equalization Tax, an American tax initiative

Other

 * British Rail Class 800, a fleet of British high-speed trains, known as Intercity Express Trains by their operator Great Western Railway
 * British Rail Class 802, another fleet of British high-speed trains, known as Intercity Express Trains by their operator Great Western Railway
 * Indole-3-ethanol or tryptophol, a chemical compound