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{{distinguish|text=[[E0 (disambiguation)]] (E followed by zero)}}
{{wiktionary|eo|EO}}
'''Eo''' or '''EO''' may refer to:
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== Businesses and organizations ==
* [[Education Otherwise]], a home education organization
* [[Elevorganisasjonen]], a Norwegian student organization
* [[Entrepreneurs' Organization]], a nonprofit network
* [[Evangelische Omroep]], a public broadcaster in the Netherlands
* [[Executive Outcomes]], a South African military company
* [[Express One International]], an airline
* [[Hewa Bora Airways]] (IATA code EO), a defunct airline in the Democratic Republic of the Congo

==Language==
* [[Eo (constructed language)]]
* [[Esperanto]] (ISO code EO), a constructed language
* [[eo (digraph)]], represents a single or two vowels in some languages
* [[Eo (hangul)]] vowel in Korean Hangul

==Science and technology==
=== Computing ===
* [[EO Personal Communicator]], an early tablet computer produced by AT&T subsidiary EO, Inc.
* [[Eight Ones]], a character code
* A line of tablet computers made by [[TabletKiosk]]

===Other uses in science and technology===
* "eo-" (derived from "Eos", meaning "dawn"), [[list of commonly used taxonomic affixes|used to describe many early animals]] in the fossil record
** [[Eoarchean]], the first era of the Archean Eon
* [[Earth observation]]
* [[Electro-optics]]
* [[Eosinophilic oesophagitis]], or Eosinophilic esophagitis, an allergic inflammatory condition of the esophagus
* [[Ethylene oxide]], a chemical compound
* [[Extremal optimization]], a type of optimization heuristic inspired by self-organized criticality

== Other uses ==
* [[Eastern Orthodoxy]], a major Christian branch.
* [[EO (film)|''EO'' (film)]], a 2022 film
* [[EO (rapper)]], a rapper from London
* [[Eo (river)]], a river in Spain 
* [[Eo (instrument)]], a Korean percussion instrument
* [[East Otago]], part of New Zealand's South Island
* ''[[Captain EO]]'', a 3D film 
* [[Equal opportunity]], a term related to civil rights
* [[Equipment Operator (US Navy)]], a Seabee occupational rating in the U.S. Navy
* [[Executive Officer]], a person responsible for the running of an organization
* [[Executive order (United States)]], a directive issued by the President of the United States

{{disambiguation}}