- DIET stands for Do I Eat Today
- DIET stands for Desorption Induced by Electronic Transitions
- DIET stands for Distributed Interactive Engineering Toolbox (client-server applications)
- DIET stands for Dry Ice Expanded Tobacco (manufacturing process)
- DIET stands for Deep Infiltration and Extraction Team (US Marine Corps)
- DIET stands for District Institute of Educational Training (India)
- DIET stands for Decentralised Information Ecosystem Technologies (information processing and management )
DIET