Ja or JA may refer to:

Arts and entertainment

  • Ja (novel), or Yes, by Thomas Bernhard
  • JA (TV series, a Danish television show

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Biology

  • Ja (beetle), an insect genus
  • Jasmonic acid, a plant hormone

Language

  • Ja, grammatical particle meaning "yes" in most Germanic languages, Slovene language and informal English
  • Ja, meaning "I" in many Slavic languages
  • Ya (Cyrillic) (Я), a Cyrillic letter, pronounced /ja/ in some languages
  • Japanese language (ISO 639-1 alpha-2 code JA)
  • Ja (Indic), a glyph in the Brahmic family of scripts
  • Ja (Javanese) (ꦗ), a letter in the Javanese script

Organizations

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  • Jamiat Ahle Hadith, a Pakistani political party
  • Japan Agricultural Cooperatives (also JA Group)
  • Junior Achievement, a US-based youth organization
  • Yugoslav Action (Serbo-Croatian: Jugoslovenska akcija), a Yugoslav nationalist organization (1930–1935)

People

  • Ja (footballer) (born 1987), Cape Verdean footballer
  • Ja Morant (born 1999), American basketball player
  • JA One (born 1969), American graffiti artist
  • Ja Rule (born 1976), American rapper, singer, songwriter, and actor

Transportation

  • Chrysler JA platform, a series of vehicles made by Chrysler
  • NZR JA Class, a 4-8-2 steam locomotive used by New Zealand Railways
  • British Rail Class 73/0 electro-diesel locomotives (Pre-TOPS classification JA)
  • Saikyō Line, whose official symbol is
  • B&H Airlines (IATA:<code>JA</code>), a Bosnian airline

Other uses

  • Ja (unit), a unit of measurement of length in Korea
  • Japan (NATO country code)
  • Judge Advocate
  • Judge of Appeal
  • Jammu and Kashmir (union territory), India (postal code)
  • Japan (aircraft registration prefix JA)

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See also

  • YA (disambiguation)