IES

The acronym IES can stand for:

Illuminating Engineering Society of North America
Indian Economic Service
Indian Education Society
Indian Engineering Service
Institute of Education Sciences
Institute for Environment and Sustainability of the European Commission
Institute for the International Education of Students
integral Ecosystem Services
Integrated Electrical Services, Inc
Integrated Environmental Solutions, an engineering and environmental software company
International Euphorbia Society
Israel Exploration Society
Institution of Environmental Sciences
Indian Engineering Services
Integrated Encryption Scheme, in cryptography, a public key cryptosystem
Internationella Engelska Skolan
Intertemporal elasticity of substitution
Integrated Export Systems, referred to as IES Ltd, a transportation software company

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