D86

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