N3 may refer to:

Roads

  • N3 (Bangladesh), connecting Dhaka and Mymensingh
  • N3 road (Belgium), one of the national roads in Belgium
  • National Road 3 (Democratic Republic of the Congo)
  • N3 road (Gabon)
  • N3 road (Ghana)
  • N3 road (Ireland), a National Primary Route
  • N3 motorway (Netherlands), one of the national roads in the Netherlands
  • N3 road (Oman)
  • N3 road (Senegal), one of the national roads in Senegal
  • N3 (South Africa), a road connecting Johannesburg to Durban
  • Route nationale 3, France

Transportation

  • , a Royal Navy battleship design that was never built
  • , a 1915 coastal defense submarine of the US Navy
  • SP&S Class N-3, a steam locomotives class from the Spokane, Portland and Seattle Locomotive Roster
  • N<sub>3</sub>, gauges for monitoring a third section in a triple spool jet engine

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  • N3, IATA code for the Russian airline Omskavia
  • N3, European large goods vehicles above 12 tonnes
  • N3 Pup - the Preceptor N3 Pup ultralight aircraft (and derivatives)
  • Huanghai N3, a midsize pickup truck

Science and technology

  • Haplogroup N (Y-DNA), a former human Y-chromosomal haplogroup, now N1c
  • n-3, Omega-3 fatty acid
  • Trinitrogen (), inorganic molecule composed of three nitrogen atoms
  • , an azide anion in chemistry
  • , a nitride anion in chemistry
  • N3 Lung cancer, metastasis to certain lymph nodes
  • N<sub>3</sub>, the genus three non orientable surface
  • N3, cis-bis(isothiocyanato)bis(2,2'-bipyridyl-4,4'-dicarboxylato)ruthenium(II), a red dye in dye-sensitized solar cells
  • N3, abbreviation for the 3 nanometer process node in semiconductor technology

Other

  • N3 (Calgary), condominium building
  • N3 (NHS), the national broadband network for the English National Health Service
  • Notation3, or N3 rules, a textual notation for the Resource Description Framework
  • N3, the third level of the Japanese-Language Proficiency Test
  • N3, the most recent version of the Nagravision conditional access system for cable and satellite television
  • N3, a postcode district in the N postcode area in London
  • N3, the former name of NDR Fernsehen, a German television channel

See also

  • N03, the ICD-10 code for Nephritic syndrome
  • ATC code N03, Antiepileptics, a subgroup of the Anatomical Therapeutic Chemical Classification System
  • 3N (disambiguation)
  • List of highways numbered 3
  • N road (disambiguation)