A5 and variants may refer to:

Science and mathematics

* A5 regulatory sequence in biochemistry * A5, the abbreviation for the androgen Androstenediol * Annexin A5, a human cellular protein *

ATC code A05 A05A Bile therapy A05AA Bile acids and derivatives :A05AA01 Chenodeoxycholic acid :A05AA02 Ursodeoxycholic acid :A05AA03 Cholic acid :A05AA04 Obeticholic acid A05AB Preparations for biliary tract therapy :A05AB01 Nicotinyl methylamide A05AX ...

''Bile and liver therapy'', a subgroup of the Anatomical Therapeutic Chemical Classification System *

British NVC community A5 (Ceratophyllum demersum community) This article gives an overview of the aquatic communities in the British National Vegetation Classification __NOTOC__ The British National Vegetation Classification or NVC is a system of classifying natural habitat types in Great Britain accord ...

, a British Isles plants community * Subfamily A5, a

Rhodopsin-like receptors Rhodopsin-like receptors are a family of proteins that comprise the largest group of G protein-coupled receptors. Scope G-protein-coupled receptors, GPCRs, constitute a vast protein family that encompasses a wide range of functions (including ...

subfamily *

Noradrenergic cell group A5 Noradrenergic cell group A5 is a group of cells in the vicinity of the superior olivary complex in the pontine tegmentum Pontine may refer to: * Having to do with the pons, a structure located in the brain stem (from ''pons'', "bridge") * Ponti ...

, a noradrenergic cell group located in the Pons *

A5 pod A5 Pod is a name given to a group of orcas (''Orcinus orca'') found off the coast of British Columbia, Canada. It is part of the northern resident population of orcas - a name given to the fish-eating orcas found in coastal waters ranging from mid- ...

, a name given to a group of orcas (Orcinus orca) found off the coast of British Columbia, Canada * A5, the strain at

fracture Fracture is the separation of an object or material into two or more pieces under the action of stress. The fracture of a solid usually occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displa ...

of a material as measured with a load test on a cylindrical body of length 5 times its diameter * ''A''₅, the alternating group on five elements

Technology

* Apple A5, the Apple mobile microprocessor * ARM Cortex-A5, ARM applications processor

Sport and recreation

* A5 (classification), an amputee sport classification * A5

grade (climbing) In rock climbing, mountaineering, and other climbing disciplines, climbers give a grade to a climbing route or boulder problem, intended to describe concisely the difficulty and danger of climbing it. Different types of climbing (such as sport ...

* A5, an aid climbing gear manufacturer - absorbed by The North Face * A05, Réti Opening Encyclopaedia of Chess Openings code * A-5, a common shorthand name for the Browning Auto-5 shotgun * Gibson A-5 mandolin, a Gibson mandolin * Tippmann A-5, a semi-automatic pneumatic marker for playing paintball * A5, an Atlanta-based volleyball club

Transport

Automobiles

* Arrows A5, a 1982 British Formula One racing car * Audi A5, a 2007–present German compact executive car * Chery A5, a 2006–2010 Chinese compact sedan * Soueast A5, a 2019–present Chinese compact sedan * JAC Refine A5, a 2019–present Chinese compact sedan

Other uses in transportation

* A5 road, in several countries * Hall-Scott A-5, an engine powering the 1916 Standard H-2 aircraft * Prussian A 5, a 1913 German railbus * Route A5 (WMATA), a bus route operated by the Washington Metropolitan Area Transit Authority * Airlinair, by IATA code * Bhutan, by aircraft registration code * ICON A5, an American amphibious aircraft * Pennsylvania Railroad class A5s, an American locomotive *

Finnish Steam Locomotive Class A5 The Finnish Steam Locomotive Class A5 was a class of two locomotives, being the first class of locomotive manufactured in Finland. These first Finnish locomotives were production experiments, which allowed the State Railways to investigate the co ...

Military

Aircraft

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

Other uses in military

* or USS ''Pike'' (SS-6), a 1903 United States Navy ''Plunger''-class submarine * , an A-class submarine of the Royal Navy *

Aggregate 5 The Aggregat series (German for "Aggregate") was a set of ballistic missile designs developed in 1933–1945 by a research program of Nazi Germany's Armed Forces (Wehrmacht). Its greatest success was the A4, more commonly known as the V-2 roc ...

, 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 This is a list of Swedish artillery regiments, battalions, corps and companies that have existed in the Swedish Army. They are listed in three ways, first by the actual units that have existed, then by the various names these units have had, and ...

* A5, the staff designation for air force headquarters staff concerned with plans or strategy ** In the United Kingdom, the Joint Force Air Component Headquarters A5 - Air Strategy and GAT branch *

A5 Juggernaut The following is a list of fictional ''Star Wars'' terrestrial vehicles, including armoured fighting vehicles, military aircraft, and naval ships. Vehicles appearing in the Original Trilogy All Terrain Armored Transport (AT-AT) The All ...

, an armored fighting vehicle in the Star Wars fictional universe

Other uses

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