| 释义 |
- Biology
- Chess
- Military
- Roads
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
Chess - A13, one of the Encyclopaedia of Chess Openings codes for the English Opening in chess
Military - Antonov A-13, a 1958 Soviet acrobatic sailplane
- HMS A13, a British A class submarine of the Royal Navy
- A-13 (tank), the General Staff specication covering three British cruiser tanks designed and built before and during the Second World War:
- Cruiser Mk III
- Cruiser Mk IV
- Covenanter tank
Roads - A13 road, in several countries
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