ETA (disambiguation)

ETA ( _eu. "Euskadi Ta Askatasuna") is a Basque separatist group.

Eta (Η, η), is the seventh letter of the Greek alphabet

ETA may also refer to:

* ETA SA, a Swiss watchmaking company
* ETA Systems, defunct manufacturer of ETA10 supercomputers
* ETA a. s., a Czech manufacturer of electronic apparel
* Electronic Technician's Association, a not-for-profit professional association of electronics technicians
* Electronic Travel Authority, Australian electronic visa
* Employment and Training Administration, a branch of the US Department of Labor
* Engineering and Technology Academy, a magnet school located in San Antonio, Texas
* Environmental Transport Association, a British breakdown and road rescue company
* Eric the Actor, a member of The Howard Stern Show's Wack Pack
* Estimated time of arrival, a measure of when a vehicle or data packet is expected to arrive
* Ethiopian Teachers' Association, a trade union representing teachers in Ethiopia
* Ethiopian Telecommunication Agency, an agency that regulates the telecommunication sector of Ethiopia
* Evangelical Theological Association, an associated teaching institute of the Australian Melbourne College of Divinity

Eta may also refer to:

* Eta Aircraft eta, a very high performance German glider
* Eta Carinae, a highly luminous hypergiant double star
* Eta conversion or η-conversion, the idea of extensionality in lamda calculus
* Eta meson, in particle physics, a strongly interacting boson
* A derogatory term used by the Japanese to refer to the Burakumin in the feudal era