N2 or N-2 may refer to:

• Dinitrogen (N₂)

• A model number of the Yamaha AvantGrand piano
• "N2", a 2011 song by Japanese indie rock band Asian Kung-Fu Generation, on the album Landmark
• Network 2 (now RTÉ Two), an Irish television station, which used the branding "N2" between 1997 and 2004
• NicoNico, a video sharing website

• N200 (neuroscience), an event-related potential (ERP) component in the 200-300 ms poststimulus range
• A non-small cell lung carcinoma staging code for Metastasis to ipsilateral mediastinal or subcarinal lymph nodes
• A para formaldehyde-based filling material for root canals, also called Sargenti paste
• A strain of the Caenorhabditis elegans var. Bristol model worm

• N₂, gauges that monitor the power turbine section in a jet engine
• N-2, an Armenian multiple rocket launcher system
• N-2 rocket, a 1981 Japanese derivative of the American Delta rocket
• A type of large goods vehicle
• GNR Class N2, a 1920 British 0-6-2T steam locomotive class
• USS N-2, a 1917 N-class coastal defense submarine of the United States Navy
• Huanghai N2, a Chinese pickup truck

• N2 diagram, in systems engineering, a function-to-function data interchange
• DSC-N2, a 2006 Sony Cyber-shot series digital camera

• Several roads; see List of N2 roads
• N2 (Long Island bus)
• London Buses route N2
• South East Airlines (IATA airline designator)
• Kabo Air (IATA airline designator)
• Carretera Nacional N-II, former name for the Route Nacional from Madrid to Barcelona and France
• Bambra (ship), formerly named the N2

• A United States Navy term for a senior military intelligence officer
• N2 Gateway, a housing project along the N2 freeway in Cape Town, South Africa
• N2, a postcode district in the N postcode area
• The fourth level in the Japanese Language Proficiency Test

• NO2 (disambiguation)
• NII (disambiguation)
• 2N (disambiguation)

Topics referred to by the same term

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