D37 or D-37 may refer to:
Ships , a Mato Grosso-class destroyer of the Brazilian Navy , a Battle-class destroyer of the Royal Australian Navy , an Avenger-class aircraft carrier of the Royal Navy , a Type 45 destroyer of the Royal Navy , a V-Class destroyer of the Royal Navy
Rail transport EMD D37, a traction motor equipping the New South Wales 42 class locomotive PRR D37, a Pennsylvania Railroad locomotive
other uses ASTM D37, a testing standard for cannabis D-37C, the computer component of the all-inertial NS-17 Missile Guidance Set D37D, a Minuteman III intercontinental ballistic missile flight computer D37 road (Croatia) Queen's Gambit Declined, a chess opening Warren Municipal Airport (Minnesota)