D31 may refer to:
Ships
* , a ''Nueva Esparta''-class destroyer of the Venezuelan Navy
* , a ''Pará''-class destroyer of the Brazilian Navy
* , a ''Cannon''-class destroyer of the Hellenic Navy
* , a W-class destroyer of the Royal Australian Navy
* , a ''Ruler''-class escort carrier of the Royal Navy
* , a Weapon-class destroyer of the Royal Navy
* , a Battle-class destroyer of the Royal Navy
Other uses
*
D31 road (Croatia)
*
Dewoitine D.30
The Dewoitine D.30 was a ten-seat cantilever monoplane built in France in 1930. The D.30 was a single-engine aircraft but the second was completed as a trimotor and redesignated D.31.
Design and development
The Dewoitine D.30 first appeared in p ...
, a French passenger monoplane
*
Druine D.31 Turbulent, a French ultralight aircraft
*
LNER Class D31, a class of British steam locomotives
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