D30

D30 may refer to:

• Dewoitine D.30, a French passenger monoplane

• Brazilian destroyer Pernambuco (1961), a Pará-class destroyer of the Brazilian Navy
• Brazilian destroyer Pernambuco (1989), a Garcia-class destroyer of the Brazilian Navy
• HMS Despatch (D30), a Danae-class light cruiser of the Royal Navy
• HMS Whirlwind (D30), a W-class destroyer of the Royal Navy

• Levdeo D30, a Chinese hatchback
• LNER Class D30, a class of British steam locomotives

• 122 mm howitzer 2A18 (D-30), a Soviet howitzer
• Canon EOS D30, a digital single lens reflex camera
• D30 road (Croatia)
• Queen's Gambit Declined, a chess opening
• Soloviev D-30, a Soviet turbofan engine
• d30, a die with 30 sides

• D3O, with a letter "O" instead of a zero