D37

D37 or D-37 may refer to:

Ships

• Brazilian destroyer Rio Grande do Norte (D37), a Mato Grosso-class destroyer of the Brazilian Navy
• HMAS Tobruk (D37), a Battle-class destroyer of the Royal Australian Navy
• HMS Dasher (D37), an Avenger-class aircraft carrier of the Royal Navy
• HMS Duncan (D37), a Type 45 destroyer of the Royal Navy
• HMS Vortigern (D37), 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)