SE, Se, or Sé may refer to:
Initialisms Standard Edition (e.g. Java Platform, Standard Edition) Special Edition Second Edition (e.g. Windows 98 Second Edition)
Arts and entertainment Sé (album), by Lúnasa, 2006 Se (instrument), a traditional Chinese musical instrument
Businesses and organizations Societas Europaea, a form of legal entity registered under European Union law Sea Ltd (NYSE: SE), tech conglomerate headquartered in Singapore Slovenské elektrárne, electric utility company in Slovakia XL Airways France, IATA airline designator SE Southeastern (train operating company), or SE Trains Limited, in England
Places Sè, Atlantique, Benin Sè, Mono, Benin Subprefecture of Sé, São Paulo, Brazil Sé (district of São Paulo) Sé (São Paulo Metro), a station Sé, Hungary Sé, Macau Sé (Angra do Heroísmo), Terceira, Azores, Portugal Sé (Braga), Portugal Sé (Bragança), Faro, Portugal Sé (Funchal), Madeira, Portugal Sé, Lamego, Portugal Sé (Lisbon), Portugal Sé, Portalegre, Portugal Sé (Porto), Portugal SE postcode area, London, England Sergipe (SE), a state of Brazil Sweden, ISO country code SE
Language Se (kana) (せ and セ), a Japanese kana Northern Sami language, ISO 639-1 code se Standard English, in linguistics Se (letter) (Ս,ս) an Armenian letter
Science and technology Se (unit of measurement), a Japanese unit of area .se, Internet country code top-level domain for Sweden Se, a text editor Selenium, symbol Se, a chemical element Special Euclidean group Standard error, of a statistic Status epilepticus, a medical state of persistent seizure Synthetic environment, a computer simulation Sony Ericsson, a former name of Sony Mobile iPhone SE, a series of budget smartphones by Apple Macintosh SE, an Apple personal computer
Other uses Southeast (direction) S. E. (name), initials used by several people Lisbon Cathedral, or simply the Sé, Portugal Sé da Guarda, Portugal Split end, a type of wide receiver in American football Somatic experiencing, a method of alternative therapy Asüna SE, a compact car marketed in Canada Secondary School Entrance Examination, a standardized examination from 1962 to 1977 Sweden (aircraft registration prefix SE)
See also Single-ended (disambiguation) Windows 11 SE, a computer operating system