SO or so may refer to:

Arts and entertainment

Music

  • So (album), an album by Peter Gabriel
  • So (band), a duo from the 1980s formed by two members of The Opposition
  • "So" (Static-X song), a song by Static-X
  • "Sō (New Love New World)", a song by Masaharu Fukuyama
  • "So", a song by War from Why Can't We Be Friends?
  • "So", a song by Fates Warning from Disconnected
  • S.O. (rapper)

Other

  • "SO" (Sons of Anarchy), the third season premiere of the FX television series Sons of Anarchy
  • So Television, a British TV production company

Relationships

  • Significant other, a partner in an intimate relationship

Businesses

  • Austrian Air Services (former IATA airline designator SO)
  • Sosoliso Airlines (former IATA airline designator SO)
  • Southern Airways (former IATA airline designator SO)
  • Southern Company (stock symbol SO)
  • Superior Aviation (IATA airline designator SO)

Language

<!--keep in sync with So language-->

  • So language (Democratic Republic of Congo), a Bantu language
  • Sô language, a Katuic language (Mon-Khmer) of Laos and Thailand
  • Swo language, a Bantu language of Cameroon
  • Soo language, a Kuliak language of Uganda
  • Somali language (ISO 639 language code "so")
  • So (kana), a Japanese kana
  • So (word), an English word

Places

  • So, Iran, a village in Isfahan Province, Iran
  • Canton of Solothurn, Switzerland
  • So Phisai District, Bueng Kan Province, Thailand
  • SO postcode area, UK, the Southampton postcode area
  • Somalia (ISO 3166-1 alpha-2 country code SO)
  • South Otago, part of New Zealand's South Island
  • Southern State Parkway, a highway in New York, United States

Science, technology, and mathematics

Biology and medicine

  • Syndromic obesity, excess body fat occurring as part of a syndrome
  • Sphincter of Oddi, a muscular valve of the duodenum

Computing

  • .so, the top-level Internet domain of Somalia
  • <code>.so</code>, a filename extension for a shared object (a dynamic library or module) in Unix and Linux
  • Shift Out, an ASCII control character in computing
  • Small-outline integrated circuit
  • StackOverflow, a programming Q&A site
  • Sony's mobile phones in Japan

Mathematics

  • SO (complexity), second-order logic in descriptive complexity
  • Special orthogonal group, a subset of an orthogonal group
  • SO(2), a term used in mathematics, the group of rotations about a fixed point in the Euclidean plane
  • SO(3), a term used in mathematics, the group of rotations about a fixed point in three-dimensional Euclidean space
  • SO(4), a term used in mathematics, the group of rotations about a fixed point in four-dimensional Euclidean space
  • SO(8), a term used in mathematics, the special orthogonal group acting on eight-dimensional Euclidean space
  • <math>\mathfrak{so}(n)</math>, the corresponding special orthogonal Lie algebra

Physics and chemistry

  • Sulfur monoxide
  • SO(10) (physics), a term used in particle physics, one of the grand unified theories is based on the SO(10) Lie group

Names

  • Sō, a Japanese surname and given name
  • Su (surname) (/), a Chinese surname and a Korean surname () derived from it
  • So (Korean name) (蘇 or 邵)

Other uses

  • So (סוֹא), King of Egypt<!-- ()-->, usually identified with Osorkon IV
  • So (dairy product), a type of dairy product made in ancient Japan
  • Sales order, an order received by a business from a customer
  • Sao civilisation or So, an African civilisation and population that flourished from ca. the 6th century to ca. 15th century
  • Shell on, a form of presentation in shrimp marketing
  • Strikeout, in baseball
  • Railway line prefix SO of Sotetsu lines

See also

  • Esso, an Exxon trade name, phonetic version of SO
  • So and so (disambiguation)
  • Só (disambiguation)
  • S0 (disambiguation)