Na

NA, N.A., Na, or n/a may refer to:

Places

• Na (state) or 那, a small state of Zhou Dynasty
• Namibia's ISO country code
  • .na, the top-level domain for Namibia
• North America, a continent

Science and medicine

• Sodium's chemical symbol
• Avogadro constant, N_A
• Neuroacanthocytosis
• Nomina Anatomica, a former international standard for human anatomical nomenclature
• Noradrenaline or norepinephrine, a hormone
• Nucleic acid analogues
• Numerical aperture, a number that characterizes a range of angles in an optical system

Linguistics

• Nauruan language's ISO code
• Na (kana), a Japanese kana
• Na (Javanese) (ꦤ), a letter in the Javanese script

Peoples

• Na people, a small tribal group in India
• Mosuo or Na, a small ethnic group in China near Tibet
• Na or 羅, a Korean surname related to the Chinese surname Luo

Other uses

• n/a, not applicable
• Na (drum), a drum played by Tibetan shamans
• Na (tree) or Mesua ferrea, a species of tree native to Sri Lanka
• Narcotics Anonymous, a twelve-step program that focuses on addiction
• National Academician, a member of the National Academy of Design
• National Alliance (Latvia), a Latvian political party
• National Alliance (Netherlands), a former Dutch political party
• National bank or National Association, in the United States
• National Association of Professional Base Ball Players, the first professional baseball league
• Neurotics Anonymous, now Emotions Anonymous
• Virgin New Adventures, a series of Doctor Who novels
• North American Airlines' IATA code
• Naples' Italian car number plates provincial designator
• Netherlands Antilles' former international vehicle registration code

NA, name alert

See also

• Nå (disambiguation)
• Na Na (disambiguation)
• Na Na Na (disambiguation)