D78 may refer to:
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D. 78, Aria "Son fra l’onde" for soprano and piano, composed by Franz Schubert in 1813
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HMS Archer (D78), Long Island-class escort carrier built by the US in 1939–1940, operated by the Royal Navy during World War II
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HMS Vidette (D78), Admiralty V class destroyer of the Royal Navy
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HMS Wolverine (D78)
HMS ''Wolverine'' was an Admiralty modified W-class destroyer built for the Royal Navy. She was one of four destroyers ordered in April 1918 from James Samuel White & Co Ltd under the 14th Order for Destroyers of the Emergency War Programme ...
, Admiralty modified W class destroyer built for the Royal Navy
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London Underground D78 Stock, type of sub-surface rolling stock which operated on the District line of the London Underground
{{Letter-Number Combination Disambiguation