Dryads are a form of mythological Greek nymph associated with trees. Dryad may also refer to:

• HMS Dryad, any one of several ships of the Royal Navy
• DRYAD, a cryptographic system used by the United States military
• Dryad's saddle (Polyporus squamosus), an edible basidiomycete mushroom
• Dryad (programming), an infrastructure for parallel and distributed programming from Microsoft Research
• Dryad is one of the eight elemental spirits featured in the Mana series. Unsurprisingly, she represents the wood element.
• Dryad (Quest for Glory), magical being from the Quest for Glory computer game series.
• SS Dryad, a refrigerated cargo ship in service with Compagnia Maritime del Este, Panama from 1949-51.

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