A43 or A-43 may refer to:
Military
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Curtiss A-43 Blackhawk, an American prototype aircraft
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Douglas A-43 Jetmaster, an American prototype aircraft
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Black Prince (tank), an experimental British heavy tank
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Advanced Landing Ground A-43, an airfield in France
Roads
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A43 road
The A43 is a primary route in the English Midlands and northern South East England, that runs from the M40 motorway near Ardley in Oxfordshire to Stamford in Lincolnshire. Through Northamptonshire it bypasses the towns of Northampton, Ke ...
, a primary road in the English Midlands
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A43 road (Northern Ireland), a primary road in Northern Ireland
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A43 autoroute
The A43 autoroute, also known as ''l'autoroute alpine'' and ''l'autoroute de la Maurienne'', is a motorway in France. Travelling through the French Alps, the road connects the city of Lyon with the Tunnel du Fréjus, near Modane, which passes the ...
, a French highway
* A 43,
Bundesautobahn 43
is an autobahn in western Germany, connecting Münster via Recklinghausen to Wuppertal. It is an important bypass for traffic coming from the A 1 wanting to go to the western Ruhr valley
The Ruhr ( ; german: Ruhrgebiet , also ''Ruhrpot ...
in Germany
Other uses
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HLA-A43, an HLA-A serotype
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Benoni Defense
The Benoni Defense is a chess opening characterized by an early reply of ...c5 against White's opening move 1.d4. Most commonly, it is reached by the sequence:
:1. b:Chess Opening Theory/1. d4, d4 b:Chess Opening Theory/1. d4/1...Nf6, Nf6
:2. b:Ch ...
, a chess opening (by ''Encyclopaedia of Chess Openings'' code)
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