N4, N-4, or N.4 may refer to:

Computing

  • N4 (NHS), the successor to the N3 NHS computer network
  • NASCAR Racing 4, a NASCAR sim by Papyrus and Sierra
  • N4, a Markup Language
  • N4, TSMC's 4 nm semiconductor process node

Energy

  • N4 (nuclear reactor), a French pressurized water reactor type

Roads

  • N4 highway (Philippines)
  • N4 (Bangladesh)
  • N4 road (Belgium), a road connecting Brussels and Arlon
  • N4 road (France)
  • N4 road (Gabon)
  • N4 road (Ireland), a National Primary Route connecting Dublin, Mullingar, Longford, Carrick-on-Shannon, and Sligo
  • N4 road (Luxembourg)
  • N4 road (Senegal)
  • N4 road (South Africa), a road connecting the Botswana border, Pretoria, and the Mozambique border
  • N4 road (Spain), a National Primary Route connecting Madrid and Andalusia
  • N4 road (Switzerland)
  • Nebraska Highway 4, a state highway in the U.S. state of Nebraska
  • Route nationale 4 (Niger)

Transport

  • Fairey N.4, a British reconnaissance flying boat of the 1920s
  • LNER Class N4, a British steam locomotive class
  • Minerva Airlines, IATA airline designator
  • SP&S Class N-4, a steam locomotive class
  • USS N-4 (SS-56), a 1916 N-class coastal defense submarine of the United States Navy

Other

  • , an unstable molecule of nitrogen (tetranitrogen)
  • N4, a postcode district in the N postcode area of London
  • N4, a Drum & Bass / Hardcore record label run by Pete Cannon. Named after the N4 London postcode district
  • N4 (television channel), a community television channel in Akureyri, Iceland
  • Washburn N4, an electric guitar
  • The second level in the Japanese Language Proficiency Test
  • Nexus 4, an Android smartphone
  • N4 (film), Indian Tamil films of 2023

See also

  • 4N (disambiguation)

N04 may refer to :

  • ATC code N04 Anti-parkinson drugs, a subgroup of the Anatomical Therapeutic Chemical Classification System
  • Griswold Airport FAA LID
  • Nephrotic syndrome ICD-10 code
  • N°4, a shortening for Number Four (disambiguation)