V18 or V-18 may refer to:
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V18 engine
A V18 engine is an eighteen-cylinder piston engine where two banks of nine cylinders are arranged in a V configuration around a common crankshaft.
The V18 engine is a rare configuration and is primarily used in large diesel engines running at l ...
, a type of internal combustion engine
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De Havilland Canada V-18
The de Havilland Canada DHC-6 Twin Otter is a Canadian STOL (Short Takeoff and Landing) utility aircraft developed by de Havilland Canada, which produced the aircraft from 1965 to 1988; Viking Air purchased the type certificate, then restart ...
, a type of aircraft
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