EO

Not to be confused with E0 (disambiguation) (E followed by zero).

Eo or EO may refer to:

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"), 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
  • Eastern Orthodox Church
• 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
• Hyundai EO, as a Hyundai Elexio short name for the Chinese EV market
• National roads in Greece, whose road numbers begin with "EO" (Greek: Εθνική Οδός)