A13

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 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
 * HMS A13, a British A-class submarine of the Royal Navy
 * Northrop YA-13, 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
 * Cruiser Mk IV
 * Covenanter tank

Other uses

 * A13, one of the Encyclopaedia of Chess Openings codes for the English Opening in chess
 * Apple A13, a system on a chip mobile processor designed by Apple
 * Samsung Galaxy A13, a smartphone manufactured by Samsung Electronics