D86 may refer to:D86 (debugger), a debugger associated with the A86 software HMS Agincourt (D86), a Royal Navy Battle class destroyer HMS Birmingham (D86), a Royal Navy Type 42 destroyer HMS Hawkins (D86), a Royal Navy Hawkins class cruisers Sequoia Field airport FAA location identifier Grünfeld Defence, Encyclopaedia of Chess Openings code A method for automated distillation by ASTM