Na
Appearance
NA, N.A., Na, or n/a may refer to:
Arts and media
- Na (drum), a drum played by Tibetan shamans
- National Academician, a member of the National Academy of Design
- New adult fiction, fiction marketed to people 18-30 years old
- Virgin New Adventures, a series of Doctor Who novels
- Nahal, Shine's pet Bengal tiger on the Nick Jr. TV show Shimmer and Shine
Organizations
- Neurotics Anonymous (N/A), a twelve-step program for recovery from mental and emotional illness
- Narcotics Anonymous (NA), a twelve-step program that focuses on recovery from drug addiction
- National Alliance (Latvia), a Latvian political party
- National Alliance (Netherlands), a former Dutch political party
- National Association (disambiguation)
- National Association of Professional Base Ball Players, the first professional baseball league
- Nepal Airlines, National flag carrier airline of Nepal
- Nepalese Army, Land military force of Nepal
- North American Airlines (IATA code: NA)
Language
- Na (kana), a Japanese kana
- Na (Javanese) (ꦤ), a letter in the Javanese script
- Nauruan language (ISO code: na)
- Na dialect, a Sino-Tibetan variety of India
Names
- Na or 羅, a Korean surname related to the Chinese surname Luo
- Na, a particle used in Thai noble names
- NA, the tailcode of VFA-94
Places
- Na (state), a small state of the Zhou Dynasty
- Namibia (ISO country code)
- Naples (car number plate code: NA), Italy
- Netherlands Antilles (former international vehicle registration code: NA)
- North America, a continent
Science and technology
Biology and medicine
- Na (tree) or Mesua ferrea, a species of tree native to Sri Lanka
- Neuroacanthocytosis, neurological conditions in which the blood contains misshapen, spiculated red blood cells called acanthocytes
- Nomina Anatomica, a former international standard for human anatomical nomenclature
- Noradrenaline or norepinephrine, a hormone
- Nucleic acid analogue, compounds analogous to naturally occurring RNA and DNA, used in medicine and in molecular biology
Chemistry
- Sodium (symbol Na), a chemical element
- Avogadro constant (NA)
- Nucleophilic addition, a type of reaction in organic chemistry
Other uses in science and technology
- .na, the top-level domain for Namibia
- Naturally aspirated engine
- NA MX-5 Miata, the first generation of the Mazda Miata
- Numerical aperture, a number that characterizes a range of angles in an optical system
Other uses
- n/a, meaning not applicable, not available, or no answer
- Na people, a small tribal group in India
- Mosuo or Na, a small ethnic group in China near Tibet