D44, D-44 or D.44 may refer to:
*
85 mm divisional gun D-44, a Soviet artillery gun
*
Aero D-44
The Siebel Si 204 was a small twin-engined transport and trainer aircraft developed in World War II. It was based on the Fh 104 Hallore. Originally designed in response to an Ministry of Aviation development order for a small civil transport ai ...
, a German military transport aircraft
*
D44 road (Croatia)
D44 is a state road connecting A9 motorway Nova Vas interchange to A8 expressway Lupoglav interchange via Buzet. The road is long.
The road also provides connections to numerous towns and cities in central Istria, most notably to Lupoglav, ...
* , a ''Danae''-class cruiser of the Royal Navy
* , a I-class destroyer of the Royal Navy
* , a Battle-class destroyer of the Royal Navy
*
Digital Forty Four
Digital Forty Four was a Sydney-only trial datacasting service that was licensed by the Australian Broadcasting Authority (now the Australian Communications and Media Authority) beginning on 17 March 2004 for an initial three-year run until late ...
, an Australian datacasting service
*
Semi-Slav Defence
The Semi-Slav Defense is a variation of the Queen's Gambit chess opening defined by the position reached after the moves:
:1. d4 d5
:2. c4 c6
:3. Nf3 Nf6
:4. Nc3 e6
The position may readily be reached by a number of different . Black's su ...
, a chess opening
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