From Wikipedia, the free encyclopedia
AH (also Ah or ah) may refer to:
- Ah!, an exclamation
- Ah (digraph), a digraph used in Taa orthography
- Ampere-hour, a unit of electric charge
- Attohenry (aH), an SI unit of inductance
- AH, the United States Navy hull classification symbol for "hospital ship"
- After-hours trading in stock trading
- Air handler, or air handling unit (AHU), a device used to condition and circulate air
- Albert Heijn, a Dutch supermarket chain owned by Ahold
- Adam Hughes, comics artist who signs his work "AH!"
- Constitution Protection Office (Hungary), Alkotmányvédelmi Hivatal, Hungarian intelligence agency
- Anhui, a Chinese province
- Asian Highway
- Auction house
- Austria–Hungary, a former European empire
- Hijri year (Anno Hegirae) in the Islamic calendar
- Adenomatous hyperplasia; see endometrial adenomatous hyperplasia and atypical adenomatous hyperplasia
- AH-1 Cobra, a model of attack helicopter
- AH-64 Apache, a model of attack helicopter
- Artificial Horizon, a cockpit instrument (Aviation)
- Air Algérie IATA designator
- Ah (computer virus), a DOS computer virus
- AH register, the high byte of an X86 16-bit AX register
- Authentication Header, a part of the IPsec protocol suite
- AH, Alternate History, a subgenre of speculative fiction
- Arcana Heart. a video game series
- Avalon Hill, makers of military-themed board games
- Afterhours.FM, often shortened as Afterhours
- Achievement Hunter, Texas based online video-gaming community.
- A-ha, a New Wave/Synthpop band from Norway
- Aa! Japanese band
- "Ah" (song), a song bu Superfly
- "Ah!", 1954 song by Charles Aznavour
- АН, the Democratic Party of Mongolia
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