N2

N2 or N-2 may refer to:


 * Dinitrogen (N₂)

Arts and media

 * 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 1997-2004
 * NicoNico, a video sharing website

Biology and medicine

 * 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

Transportation technology

 * 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 (SS-54), a 1917 N-class coastal defense submarine of the United States Navy
 * Huanghai N2, a Chinese pickup truck

Other uses in science and technology

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

Transit

 * 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

Other uses

 * 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