The Industrial Estate Authority of Thailand (I-EA-T), (Thai: การนิคมอุตสาหกรรมแห่งประเทศไทย) is a state enterprise under control of the Ministry of Industry of Thailand.
The responsibilities of the authority are to create and organize industrial estates, grouping together industrial facilities in a synergistic manner.
The authority also has the responsibility of decentralization of industrial activity away from the capital to outlying provinces of Thailand.
The authority is active in fields of environmental issues, workplace safety, land use, insurance, import and export management and promotion, and factory-related infrastructure development such as water supply, electricity distribution, telephony, shopping, housing, and roads.
With industrial estates as an implementation tool, I-EA-T also serves as a governmental mechanism to decentralize industrial development to provincial areas throughout the country.