title: Eta (disambiguation)
text: Eta or ETA may mean:
  
  Words:
   Eta, of the Greek alphabet (Η, η)
   Eta Aircraft eta, a very high performance German glider
   Burakumin, a Japanese social minority group (Eta is an old, derogatory name)
   Eta reduction in mathematics: see lambda calculus
   Eta (Potato Chip), a New Zealand brand of potato chip, produced by Griffin's Foods
   Eta Carinae, a highly luminous hypergiant double star
   Eta meson, a physics particle: see list of mesons
   Eta (letter in Greek alphabet, lower case only), symbol for efficiency in scientific discourse
  Abbreviations:
   Estimated time of arrival
   Estimated Time Amount when using μTorrent, Azureus, and other BitTorrent clients.
   Education And Training Administration, flight training software by Talon Systems
   Euskadi Ta Askatasuna () is a Basque paramilitary nationalist organization. 
   ETA SA, a watchmaking company
   ETA, a. s., electrotechnical company from Hlinsko, Czech Republic  
   Electronic Technician's Association
   Electronic Travel Authority, Australian electronic visa
   Elektrosektionens Teletekniska Avdelning, An electronics club at Chalmers University, Sweden 
   Employment and Training Administration, a branch of the US Department of Labor
   Engineering and Technology Academy, a school is San Antonio, and part of NEISD
   Environmental Transport Association, a UK motor car breakdown and rescue organisation
   Eric the Actor, see Eric the Midget
   Estonian Broadcasting Agency (Eesti Teadete Agentuur), a defunct Estonian news service
   Ethiopian Teachers' Association, a trade union centre for Ethiopia
   Ethiopian Telecommunication Agency
   Evangelical Theological Association, an associated teaching institute of the Melbourne College of Divinity
   Eidiko Tmima Alexiptotiston, Greek special operations unit
   A numerical weather prediction model formally known as the Eta