# AH

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> Source: https://en.wikipedia.org/wiki/AH
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> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**AH** and variants may refer to:

- Ah!, an [exclamation](https://en.wiktionary.org/wiki/exclamation)
- AH (*[Anno Hegirae](/source/Anno_Hegirae)*), Latin for Islamic "in the year of the Hijra" similar to the Latin for the Christian year *Anno Domini*

## Music

- "Ah", song by [Charles Aznavour](/source/Charles_Aznavour) written by Charles Aznavour and José Lucchesi 1954
- ["Ah" (song)](/source/Ah_(song)), a Japanese song by Superfly
- "Ah", a song by the Turkish band [Duman](/source/Duman_(band)) 2002

## Games and literature

- [Achievement Hunter](/source/Achievement_Hunter), a Texas-based online video gaming community
- [Adam Hughes](/source/Adam_Hughes), a comic artist who signs his work "AH!"
- [Alternate history](/source/Alternate_history), a subgenre of speculative fiction
- *[Arcana Heart](/source/Arcana_Heart)*, a video game series
- [Avalon Hill](/source/Avalon_Hill), makers of military-themed board games

## Places

- [Afghanistan](/source/Afghanistan), World Meteorological Organization country code
- [Anhui](/source/Anhui), a province of China (Guobiao abbreviation AH)
- [Austria-Hungary](/source/Austria-Hungary), a former European empire

## Aviation

- [Air Algérie](/source/Air_Alg%C3%A9rie) IATA designator
- Artificial Horizon, an [attitude indicator](/source/Attitude_indicator), an aircraft cockpit instrument
- US military designation of an [attack helicopter](/source/Attack_helicopter#United_States)

## Computing

- [AH register](/source/AH_register), the high byte of an X86 16-bit AX register
- [Authentication Header](/source/Authentication_Header) (AH), a part of the IPsec protocol suite

## Disease, ventilation and electricity

- Adenomatous hyperplasia; see [endometrial adenomatous hyperplasia](/source/Endometrial_hyperplasia) and atypical adenomatous hyperplasia
- [Air handler](/source/Air_handler), or air handling unit (AHU), a device used to condition and circulate air
- [Ampere hour](/source/Ampere_hour), a unit of electric charge

## Other fields

- *Aegyptiaca Helvetica*, an archaeological journal published by [Schwabe (publisher)](/source/Schwabe_(publisher))
- [Ah (digraph)](/source/List_of_Latin-script_digraphs#A), a digraph used in Taa language orthography
- [Albert Heijn](/source/Albert_Heijn), a Dutch supermarket chain owned by Ahold
- *Alkotmányvédelmi Hivatal*, the [Constitution Protection Office](/source/Constitution_Protection_Office), a Hungarian intelligence agency
- [Asian Highway Network](/source/Asian_Highway_Network), a project among countries in Asia and Europe to improve the highway systems in Asia
- [Adolf Hitler](/source/Adolf_Hitler), leader of Nazi Germany from 1933 - 1945
- A US Navy hull classification symbol: [Hospital ship (AH)](/source/List_of_United_States_Navy_hospital_ships#Post-Geneva_Conventions)
- Ahal ([vehicle registration](/source/Vehicle_registration_plates_of_Turkmenistan) suffix AH)

## See also

- [AAH (disambiguation)](/source/AAH_(disambiguation))
- [AHH (disambiguation)](/source/AHH_(disambiguation))
- [A-ha](/source/A-ha), a New Wave/Synthpop band from Norway
- [Aa!](/source/Aa!) Japanese band
- [Ah Ah Ah (disambiguation)](/source/Ah_Ah_Ah_(disambiguation))

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Adapted from the Wikipedia article [AH](https://en.wikipedia.org/wiki/AH) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/AH?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.