N3

N3 may refer to:

Roads

• N3 road (Belgium), one of the national roads in Belgium
• Route nationale 3, France
• N3 road (Ireland), a National Primary Route
• N3 road (Senegal), one of the national roads in Senegal
• N3 road (South Africa), a road connecting Johannesburg to Durban

Transport

• N3-class battleship, a Royal Navy battleship design that was never built
• SP&S Class N-3, a steam locomotives class from the Spokane, Portland and Seattle Locomotive Roster
• USS N-3 (SS-55), a 1915 coastal defense submarine of the US Navy
• N3, European large goods vehicles above 12 tonnes
• N3, IATA code for the Russian airline Omskavia
• N₃ (jet engines), the RPM for a third section in a jet engine

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 (cis-bis(iso-thiocyanato) bis(2,2¢-bipyridyl-4,4¢-di-carboxylato) ruthenium(II) ), a red dye using in dye-sensitized solar cells
• N3 Lung cancer, metastasis to certain lymph nodes
• N3, the most recent version of the Nagravision conditional access system for cable and satellite television
• N3 (NHS), the broadband network for the NHS in England
• N3, a postcode district in the N postcode area
• Ninety-Nine Nights, a video game for the Xbox 360
• Notation3, or N3 rules, a textual notation for the Resource Description Framework (RDF)
• N₃ the genus three non orientable surface
• N3 plugs are used for remote shutters on their high-end Canon DSLRs.
• N3, a term used in online gaming which means "no name noob"
• A model number of the Yamaha AvantGrand piano
• N3, the third level of the Japanese Language Proficiency Test

See also

• ATC code N03 Antiepileptics, a subgroup of the Anatomical Therapeutic Chemical Classification System
• N03, the ICD-10 code for Nephritic syndrome
• N°3, number three
• Route nationale 3, a road in France