D15

D15 or D.15 may refer to :
 * Slav Defence, 4.Nc3, Encyclopaedia of Chess Openings code
 * Dewoitine D.15, a French Dewoitine aircraft
 * HMS Vindex (D15), a 1943 British Royal Navy escort aircraft carrier
 * LSWR D15 class, a 1912 British steam locomotive model
 * PRR D15, an 1892 American steam locomotive model
 * Allis-Chalmers Model D15
 * Dublin 15, a Dublin, Ireland postal district
 * 15-pin variant of D-subminiature electrical connectors

and also :
 * Benign neoplasm of other and unspecified intrathoracic organs ICD-10 code