A type

A type or type A may refer to:

Science

A-type asteroid, a type of relatively uncommon inner-belt asteroids
A type blood, a type in the ABO blood group system
A-type inclusion, a type of cell inclusion
A-type potassium channel, a type of voltage-gated potassium channel
A type proanthocyanidin, a specific type of flavonoids
A-type star, a class of stars
Type A climate, a type in the Köppen climate classification
Type A flu, a type of influenza virus
Type A evaluation of uncertainty, an uncertainty in measurement that can be inferred, for example, from repeated measurement
Type A personality, a personality type in the Type A and Type B personality theory
Hemophilia type A, a type of haemophilia
A-type granite a type of granite rock
Adenosine receptor

Type A Dolby Noise Reduction, a type of Dolby noise-reduction system
Type A plug (see also NEMA connector)
Type A submarine, a class of submarines in the Imperial Japanese Navy which served during the Second World War
Renault A-Type engine, a straight-4 automobile engine
Toyota Type A engine
Vauxhall A-Type, a car manufactured by Vauxhall Motors from 1908 to 1915
A type Adelaide tram

Type A (label), a music label that for example produced the 2004 album What Doesn't Kill You... by Candiria
Type A (artist collective), a pair of New York-based artists named Adam Ames and Andrew Bordwin