AH

AH and variants may refer to:

• Ah!, an exclamation

Arts and entertainment

Music

• "Ah", song by Charles Aznavour written by Charles Aznavour and José Lucchesi 1954
• "Ah" (song), a Japanese song by Superfly
• "Ah", a Turkish song by Duman (band) 2002

Other uses in arts and entertainment

• Achievement Hunter, a Texas-based online video-gaming community
• Adam Hughes, a comic artist who signs his work "AH!"
• Alternate history, a subgenre of speculative fiction
• Arcana Heart, a video game series
• Avalon Hill, makers of military-themed board games

Places

• Anhui, a province of China (Guobiao abbreviation AH)
• Austria-Hungary, a former European empire

In science and technology

In aviation

• Air Algérie IATA designator
• Artificial Horizon, an attitude indicator, a cockpit instrument (Aviation)
• Bell AH-1 Cobra, a model of attack helicopter
• Boeing AH-64 Apache, a model of attack helicopter

In computing

• AH register, the high byte of an X86 16-bit AX register
• AH Authentication Header, a part of the IPsec protocol suite

Other uses in science and technology

• Adenomatous hyperplasia, in medicine; see endometrial adenomatous hyperplasia and atypical adenomatous hyperplasia
• Air handler, or air handling unit (AHU), a device used to condition and circulate air
• Ampere-hour, a unit of electric charge
• Attohenry (aH), an SI unit of inductance

Other uses

• After-hours trading or extended-hours trading in stock trading
• Ah (digraph), a digraph used in Taa language orthography
• Albert Heijn, a Dutch supermarket chain owned by Ahold
• Alkotmányvédelmi Hivatal, the Constitution Protection Office, a Hungarian intelligence agency
• Anno Hegirae (Hijri year), a year in the Islamic calendar
• Asian Highway Network, a project among countries in Asia and Europe to improve the highway systems in Asia
• Auction house, where goods or services are sold at auction
• Hospital ship (US Navy hull classification symbol AH)

See also

• AAH (disambiguation)
• AHH (disambiguation)
• A-ha, a New Wave/Synthpop band from Norway
• Aa! Japanese band
• All pages with titles beginning with AH
• All pages with titles containing AH