D12 (disambiguation)

• ARA Heroína (D-12)
• Albatros D.XII
• Allis-Chalmers D Series
• Almirante Clemente
• Bavarian D XII
• Curtiss D-12
• D-12 armoured car
• D12
• D12 Diamond Nurturing System
• D12 road (Croatia)
• Decorah Bald Eagles
• Dewoitine D.12
• Dice
• DirecTV
• DirecTV-12
• Dublin
• Dublin 12
• Dwight Howard
• Familial adenomatous polyposis
• GS&WR Class D12
• Great Southern and Western Railway
• HMS Striker (D12)
• PRR D12
• Pfalz D.XII
• Republic of Ireland
• Scuba diving
• Spyker D12