A13 or A-13 may refer to:

Biology

* ATC code A13 ''Tonics'', a subgroup of the Anatomical Therapeutic Chemical Classification System * British NVC community A13 (Potamogeton perfoliatus - Myriophyllum alterniflorum community) * Subfamily A13, a

rhodopsin-like receptors Rhodopsin-like receptors are a protein family, 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 funct ...

subfamily

Transportation

* A13 road, in several countries * Archambault A13, a French sailboat design * Antonov A-13, a 1958 Soviet acrobatic sailplane * Chery A13, a subcompact car * , a British A-class submarine of the Royal Navy *

Northrop YA-13 The Northrop YA-13 was an attack version of the Northrop Gamma type aircraft. After receiving an engine change, the aircraft was redesignated XA-16. Design and development The Northrop Gamma 2C was a company funded demonstrator based on the No ...

, a 1930s American attack aircraft prototype * A-13 (tank), the General Staff specification covering three British cruiser tanks designed and built before and during the Second World War **

Cruiser Mk III The Tank, Cruiser, Mk III, also known by its General Staff specification number A13 Mark I, was a British cruiser tank of the Second World War. It was the first British cruiser tank to use the Christie suspension system, which gave higher speed ...

Cruiser Mk IV The Cruiser Tank Mk IV ( A13 Mk II) was a British cruiser tank of the Second World War. It followed directly on from the Tank, Cruiser, Mk III (A13 Mk I). The first Mk IVs were Mk IIIs with extra armour fitted to the turret. Later Mk IVAs were ...

Covenanter tank The Cruiser tank Mk V or A13 Mk III Covenanter was a British cruiser tank of the Second World War. The Covenanter was the first cruiser tank design to be given a name. Designed by the London, Midland and Scottish Railway as a better-armoured rep ...

Other uses

* A13, one of the Encyclopaedia of Chess Openings codes for the

English Opening The English Opening is a chess opening that begins with the move: : 1. c4 A flank opening, it is the fourth most popular and, according to various databases, one of the four most successful of White's twenty possible first moves. White begins ...

in chess *

Apple A13 The Apple A13 Bionic is a 64-bit ARM-based system on a chip (SoC), designed by Apple Inc., part of the Apple silicon series. It appears in the iPhone 11, 11 Pro/Pro Max, the iPad (9th generation), the iPhone SE (2nd generation) and the ...

, a system on a chip mobile processor designed by Apple * Samsung Galaxy A13, a smartphone manufactured by

Samsung Electronics Samsung Electronics Co., Ltd. (SEC; stylized as SΛMSUNG; ) is a South Korean multinational major appliance and consumer electronics corporation founded on 13 January 1969 and headquartered in Yeongtong District, Suwon, South Korea. It is curr ...

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