Ans is a Belgian municipality in the province of Liège.
As an acronym ANS may refer to:
- Music
- ANS (album), a box set from the British band Coil
- ANS (single), a single by the British band Coil
- ANS synthesizer, a Russian photoelectric musical instrument
- A.N.S, an American crossover thrash band.
- Transportation
- The station code of Ainsdale railway station in England
- The IATA airport code of Andahuaylas Airport in Peru
- Media
- Algemeen Nijmeegs Studentenblad, a Dutch student magazine
- ANS Group of Companies, a news organization in Azerbaijan
- Science and technology
- Academy of Natural Sciences, Philadelphia, USA
- American National Standards, defined by the American National Standards Institute
- Advanced Network and Services, a non-profit network service provider in the 1990s
- American Nuclear Society
- 8-Anilinonaphthalene-1-sulfonate, a chemical compound
- Anthocyanidin synthase, an enzyme in the leucocyanidin biosynthetis pathway
- Approximate number system, a hypothesized physiological basis for the sense of number
- Astronomical Netherlands Satellite, a Dutch X-ray satellite
- Authoritative Name Server, a DNS server
- Autonomic nervous system, part of the peripheral nervous system in the body
- ANS carriage control characters (or ASA control characters), for computer line printers
- Other uses
- American Numismatic Society
- Amman National School, in Amman, Jordan
- Anna Nicole Smith, a dead American sex symbol
- Ansvarlig selskap, a Norwegian personal responsibility company model
- Armée Nationale Sihanoukiste, a Cambodian resistance group
- The ANS key on some graphing calculators, used as a shortcut for inputting the result (answer) of the previous calculation
- In MATLAB the ans variable is created automatically when no output argument is specified, and it refers to the most recent answer.