V18

V18 or V-18 may refer to:


 * De Havilland Canada V-18, a utility transport aircraft
 * ITU-T V.18, a textphone protocol
 * LFG V 18 Sassnitz, a German flying boat
 * V18 engine, an internal combustion engine
 * Vulcan V18, a rifle
 * V18, a family history of certain other specific conditions, in the ICD-9 V codes