# A5

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**A5** and variants may refer to:

## Science and technology

- [A5 regulatory sequence](/source/A5_regulatory_sequence) in biochemistry
- [A5](/source/Androstenediol), the abbreviation for the [androgen](/source/Androgen) Androstenediol
- [Annexin A5](/source/Annexin_A5), a human cellular protein
- [ATC code A05](/source/ATC_code_A05) *Bile and liver therapy*, a subgroup of the Anatomical Therapeutic Chemical Classification System
- [British NVC community A5 (Ceratophyllum demersum community)](/source/British_NVC_community_A5_(Ceratophyllum_demersum_community)), a British Isles plants community
- Subfamily A5, a [Rhodopsin-like receptors](/source/Rhodopsin-like_receptors) subfamily
- [Noradrenergic cell group A5](/source/Noradrenergic_cell_group_A5), a noradrenergic cell group located in the [Pons](/source/Pons)
- [A5 pod](/source/A5_pod), a name given to a group of orcas (Orcinus orca) found off the coast of British Columbia, Canada
- A5, the strain at [fracture](/source/Fracture) of a material as measured with a load test on a cylindrical body of length 5 times its diameter
- *A*5, the [alternating group](/source/Alternating_group) on five elements
- Zeolite A-5, a calcium-type [molecular sieve](/source/Molecular_sieve) also known as 5A

### Computing

- [Apple A5](/source/Apple_A5), the Apple mobile microprocessor
- [ARM Cortex-A5](/source/ARM_Cortex-A5), ARM applications processor

### Robotics

- Lely Astronaut A5 and A5 Next, the fifth version of the Astronaut robot manufactured by [Lely](/source/Lely_(company))

## Sport and recreation

- [A5 (classification)](/source/A5_(classification)), an amputee sport classification
- A5 [grade (climbing)](/source/Grade_(climbing))
- A5, an aid climbing gear manufacturer - absorbed by [The North Face](/source/The_North_Face)
- A05, [Réti Opening](/source/R%C3%A9ti_Opening) Encyclopaedia of Chess Openings code
- A-5, a common shorthand name for the [Browning Auto-5](/source/Browning_Auto-5) shotgun
- [Gibson A-5 mandolin](/source/Gibson_A-5_mandolin), a [Gibson](/source/Gibson_Guitar_Corporation_product_list) mandolin
- [Tippmann A-5](/source/Tippmann_A-5), a semi-automatic pneumatic marker for playing paintball
- A5, an Atlanta-based volleyball club

## Transport

For military vehicles, see [Military](#Military).

### Automobiles

- [Arrows A5](/source/Arrows_A5), a 1982 British Formula One racing car
- [Audi A5](/source/Audi_A5), a 2007–present German compact executive car
- [Chery A5](/source/Chery_A5), a 2006–2010 Chinese compact sedan
- [Soueast A5](/source/Soueast_A5), a 2018–2023 Chinese compact sedan
- [Sehol A5](/source/Sehol_A5), a 2019–present Chinese compact sedan, formerly JAC Jiayue A5

### Other uses in transportation

- [A5 road](/source/A5_road), in several countries
- [Hall-Scott A-5](/source/Hall-Scott_A-5), an engine powering the 1916 [Standard H-2](/source/Standard_H-2) aircraft
- [Prussian A 5](/source/Prussian_A_5), a 1913 German [railbus](/source/List_of_Prussian_locomotives_and_railbuses#Railbuses)
- [Route A5 (WMATA)](/source/Route_A5_(WMATA)), a bus route operated by the Washington Metropolitan Area Transit Authority
- [Airlinair](/source/Airlinair), by IATA code
- [Bhutan](/source/Bhutan), by aircraft registration code
- [ICON A5](/source/ICON_A5), an American amphibious aircraft
- [Pennsylvania Railroad class A5s](/source/Pennsylvania_Railroad_class_A5s), an American locomotive
- [Finnish Steam Locomotive Class A5](/source/Finnish_Steam_Locomotive_Class_A5)
- [LNER Class A5](/source/LNER_Class_A5), a class of 4-6-2T steam locomotives

## Military

### Aircraft

- *A-5*, an export version of [Nanchang Q-5](/source/Nanchang_Q-5), a Chinese-built jet fighter bomber
- [Curtiss Falcon](/source/Curtiss_Falcon) or A-5 Falcon, an attack aircraft manufactured by the Curtiss Aircraft Company
- [Mitsubishi A5M](/source/Mitsubishi_A5M), a 1930s Japanese fighter plane
- [A-5 Vigilante](/source/A-5_Vigilante), a carrier-based supersonic bomber designed for the United States Navy
- [Focke-Wulf A 5](/source/Focke-Wulf_A_5), a World War I German Focke-Wulf aircraft
- [Sturzkampfgeschwader 1](/source/Sturzkampfgeschwader_1), from its historic *Geschwaderkennung* code with the [Luftwaffe](/source/Luftwaffe) in World War II

### Other uses in military

- [USS *A-5* (SS-6)](/source/USS_A-5_(SS-6)) or USS *Pike* (SS-6), a 1903 United States Navy *Plunger*-class submarine
- [HMS *A5*](/source/HMS_A5), an A-class submarine of the Royal Navy
- [Aggregate 5](/source/Aggregate_5), a German rocket design, scaled down precursor to the V-2, in World War II
- A 5, a Swedish regiment designation, see [list of Swedish artillery regiments](/source/List_of_Swedish_artillery_regiments)
- A5, the [staff designation](/source/Staff_(military)#Continental_Staff_System) for air force headquarters staff concerned with plans or strategy - In the United Kingdom, the [Joint Force Air Component Headquarters](/source/Joint_Force_Air_Component_Headquarters) A5 - Air Strategy and GAT branch
- [A5 Juggernaut](/source/A5_Juggernaut), an armored fighting vehicle in the Star Wars fictional universe

## Other uses

- [A5 paper size](/source/A5_paper_size), an ISO 216 international standard paper size (148 × 210 mm)
- A5, the highest grade of Japanese [wagyu](/source/Wagyu) beef
- In [Town and country planning in the United Kingdom](/source/Town_and_country_planning_in_the_United_Kingdom), A5 is the code for permission to use specific land or premises for takeaways

## See also

- [A5/1](/source/A5/1), [A5/2](/source/A5/2) and [A5/3](/source/A5/3), ciphers used in cellular phones
- [AV (disambiguation)](/source/AV_(disambiguation))
- [Alpha 5 (disambiguation)](/source/Alpha_5_(disambiguation)) (α5 / Α5)
- [5A (disambiguation)](/source/5A_(disambiguation))

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Adapted from the Wikipedia article [A5](https://en.wikipedia.org/wiki/A5) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/A5?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.