D18 may refer to:
*
D-18 guitar
C.F. Martin & Company (often referred to as Martin) is an American guitar manufacturer established in 1833, by Christian Frederick Martin. It is highly respected for its acoustic guitars and is a leading manufacturer of flat top guitars. Th ...
* , a ''Cannon''-class destroyer escort of the Brazilian Navy
*
Darmstadt D-18
The Darmstadt D-18 was a German light sports aircraft that was designed and built in the late-1920s by the Akaflieg Darmstadt of the Technische Universität Darmstadt.
Design and development
The aircraft was designed by F. Fecher and students in ...
, a German sportsplane
*
Dublin 18
Dublin postal districts have been used by Ireland's postal service, known as '' An Post'', to sort mail in Dublin. The system is similar to that used in cities in Europe and North America until they adopted national postal code systems in the 1 ...
, a postal district in Ireland
* , a County-class destroyer of the Royal Navy
* , an ''Attacker''-class escort carrier of the Royal Navy
* , a Battle-class destroyer of the Royal Navy
*
Jodel D18
The Jodel D18 is a French ultralight aircraft, designed and produced by Jodel.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 31. WDLA UK, Lancaster UK, 2011. ISSN 1368-485XTacke, Willi; Marino Bo ...
, a French ultralight aircraft
*
LNER Class D18
The North Eastern Railway Class M1 (LNER Class D17/1) is a class of 4-4-0 steam locomotive, designed by Wilson Worsdell. 20 initial engines were built, then 30 further units were built, designated Class Q (LNER Class D17/2).
Classification
...
, a steam locomotive class
*
Progress D-18, a turbofan engine
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