A39 or A-39 may refer to:
*
Tortoise heavy assault tank
The Tortoise heavy assault tank (A39) was a British heavy tank, heavy assault gun tank design developed during the World War II, Second World War, but never put into mass production. It was developed for the task of clearing heavily fortified ...
, a British experimental tank in World War 2
* The FAA identifier for
Ak-Chin Regional Airport
Roads
*
A39 highway (Australia), a road in Victoria designated A39/B340
*
A39 motorway (France), a road connecting Dijon with Dole and Bourg en Bresse
*
A 39 motorway (Germany), a road connecting Salzgitter, Wolfsburg and Braunschweig
*
A39 road (England)
and also:
*
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 ...
, Encyclopaedia of Chess Openings code
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