D4

From Wikipedia, the free encyclopedia

D4, D.IV, d4 or variants may refer to:

Science and medicine[edit]

Mathematics[edit]

Technology and computing[edit]

Aircraft[edit]

Transport[edit]

Rail[edit]

Road[edit]

Engines[edit]

  • Mercedes D.IV, a World War I German 8-cylinder, liquid-cooled inline aircraft engine
  • Mercedes D.IVa, a 1917 German 6-cylinder, water-cooled, inline aircraft engine

Media and entertainment[edit]

Other uses[edit]

See also[edit]