D44, D-44 or D.44 may refer to:
85 mm divisional gun D-44, a Soviet artillery gun Aero D-44, a German military transport aircraft D44 road (Croatia) , 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, an Australian datacasting service Semi-Slav Defence, a chess opening