A5 and variants may refer to:

Science and mathematics

* A5 regulatory sequence in biochemistry * A5, the abbreviation for the

androgen An androgen (from Greek ''andr-'', the stem of the word meaning "man") is any natural or synthetic steroid hormone that regulates the development and maintenance of male characteristics in vertebrates by binding to androgen receptors. This in ...

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 Ot ...

''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 system. Introduction The aquatic communities of the NVC were described in Volume 4 of '' British Plant Communities'', first published in ...

, 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, a noradrenergic cell group located in the

Pons The pons (from Latin , "bridge") is part of the brainstem that in humans and other bipeds lies inferior to the midbrain, superior to the medulla oblongata and anterior to the cerebellum. The pons is also called the pons Varolii ("bridge of Va ...

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 displ ...

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

alternating group In mathematics, an alternating group is the group of even permutations of a finite set. The alternating group on a set of elements is called the alternating group of degree , or the alternating group on letters and denoted by or Basic pr ...

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 spor ...

* A5, an aid climbing gear manufacturer - absorbed by

The North Face The North Face is an American outdoor recreation products company. The North Face produces outdoor clothing, footwear, and related equipment. Founded in 1968 to supply climbers, the company's logo draws inspiration from Half Dome, in Yosemit ...

* A05, Réti Opening Encyclopaedia of Chess Openings code * A-5, a common shorthand name for the

Browning Auto-5 The Browning Automatic 5, most often Auto-5 or simply A-5, is a recoil-operated semi-automatic shotgun designed by John Browning. It was the first successful semi-automatic shotgun design, and remained in production until 1998. The name of the s ...

shotgun * Gibson A-5 mandolin, a

Gibson Gibson may refer to: People * Gibson (surname) Businesses * Gibson Brands, Inc., an American manufacturer of guitars, other musical instruments, and audio equipment * Gibson Technology, and English automotive and motorsport company based * Gi ...

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 A5 Road may refer to: ;Africa * A5 highway (Nigeria), a road connecting Lagos and Ibadan * A5 road (Zimbabwe), a road connecting Harare and Francistown ;Americas * Quebec Autoroute 5, a road in Quebec, Canada * County Route A5 (California) or B ...

, 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 Bhutan (; dz, འབྲུག་ཡུལ་, Druk Yul ), officially the Kingdom of Bhutan,), is a landlocked country in South Asia. It is situated in the Eastern Himalayas, between China in the north and India in the south. A mountainou ...

, by aircraft registration code * ICON A5, an American amphibious aircraft *

Pennsylvania Railroad class A5s The Pennsylvania Railroad's class A5s was the largest class of 0-4-0 steam locomotives. The Pennsylvania Railroad built 47 in its Juniata Shops between 1916–1924. They were all retired by 1957. One is preserved at the Railroad Museum of Pennsyl ...

, 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 The Nanchang Q-5 (; NATO reporting name: Fantan), also known as the A-5 in its export versions, is a Chinese-built single-seat, twin jet engine ground- attack aircraft based on the Shenyang J-6. The aircraft is primarily used for close air ...

, a Chinese-built jet fighter bomber * Curtiss Falcon or A-5 Falcon, an attack aircraft manufactured by the Curtiss Aircraft Company *

Mitsubishi A5M The Mitsubishi A5M, formal Japanese Navy designation , experimental Navy designation Mitsubishi Navy Experimental 9-''Shi'' Carrier Fighter, company designation Mitsubishi ''Ka''-14, was a Japanese carrier-based fighter aircraft. It was the world ...

, a 1930s Japanese fighter plane *

A-5 Vigilante The North American A-5 Vigilante was an American carrier-based supersonic bomber designed and built by North American Aviation (NAA) for the United States Navy. Prior to 1962 unification of Navy and Air Force designations, it was designated t ...

, a carrier-based supersonic bomber designed for the United States Navy *

Focke-Wulf A 5 Focke-Wulf Flugzeugbau AG () was a German manufacturer of civil and military aircraft before and during World War II. Many of the company's successful fighter aircraft designs were slight modifications of the Focke-Wulf Fw 190. It is one of the ...

, a World War I German

Focke-Wulf aircraft Focke-Wulf Flugzeugbau AG () was a German manufacturer of civil and military aircraft before and during World War II. Many of the company's successful fighter aircraft designs were slight modifications of the Focke-Wulf Fw 190. It is one of the p ...

Sturzkampfgeschwader 1 ''Sturzkampfgeschwader'' 1 (StG 1 - Dive Bomber Wing 1) was a Luftwaffe dive bomber wing during World War II. StG 1 was formed in May 1939 and remained active until October 1943, when it was renamed and reorganised into Schlachtgeschwader ...

, from its historic ''Geschwaderkennung'' code with the

Luftwaffe The ''Luftwaffe'' () was the aerial-warfare branch of the German '' Wehrmacht'' before and during World War II. Germany's military air arms during World War I, the '' Luftstreitkräfte'' of the Imperial Army and the '' Marine-Fliegerabt ...

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. ...

, 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 The Joint Force Air Component Headquarters (JFACHQ) is the United Kingdom's deployable air command and control unit. The JFACHQ is run by the Royal Air Force with representation from the other services. The JFACHQ has members from the operatio ...

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 Town and country planning in the United Kingdom is the part of English land law which concerns land use planning. Its goal is to ensure sustainable economic development and a better environment. Each country of the United Kingdom has its own ...

, A5 is the code for permission to use specific land or premises for takeaways