N3

N3 may refer to:

Roads

• N3 (Bangladesh), connecting Dhaka and Mymensingh
• N3 road (Belgium), one of the national roads in Belgium
• Route nationale 3, France
• 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 (Senegal), one of the national roads in Senegal
• N3 road (South Africa), a road connecting Johannesburg to Durban

Transportation

• Template:Sclass2-, a Royal Navy battleship design that was never built
• USS N-3 (SS-55), 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
• N₃ (jet engines), the RPM for a third section in a jet engine
• N3, IATA code for the Russian airline Omskavia
• N3, European large goods vehicles above 12 tonnes

Science

• Haplogroup N (Y-DNA), a former human Y-chromosomal haplogroup, now N1c
• n-3, Omega-3 fatty acid
• N₃⁻, an azide anion in chemistry
• N3 Lung cancer, metastasis to certain lymph nodes
• N₃, the genus three non orientable surface
• N3, (cis-bis(iso-thiocyanato) bis(2,2¢-bipyridyl-4,4¢-di-carboxylato) ruthenium(II)), a red dye in dye-sensitized solar cells

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

See also

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