N4

N4, N-4, N.4, or N04 may refer to:

• N₄, an unstable molecule of nitrogen.
• Washburn N4, an electric guitar
• N4 Markup Language
• N°4, a shortening for Number Four
• N4, a postcode district in the N postcode area
• SP&S Class N-4, a steam locomotives class
• USS N-4 (SS-56), a 1916 N-class coastal defense submarine of the United States Navy
• N4 (television channel), a community television channel in Akureyri, Iceland

Roads

• N4 road (Belgium), a road connecting Brussels and Arlon
• N4 road (France)
• 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 (Switzerland)

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

other 

• Minerva Airlines, IATA airline designator
• NASCAR Racing 4, a NASCAR sim by Papyrus and Sierra
• Tetranitrogen
• Fairey N.4, a British reconnaissance flying boat of the 1920s