Vulcan could mean:

Mythology
Vulcan (mythology), the blacksmith god of fire and volcanoes in Roman mythology
Hephaestus, the Greek god of smiths identified with Vulcan.

Fiction 
 Vulcan (Star Trek), a race in the fictional Star Trek universe
 Vulcan (Star Trek planet), home of the Vulcans
 Vulcan!, a 1978 Star Trek novel by Kathleen Sky
 Vulcan (DC Comics), a character from DC Comics
 Vulcan (comic), Ipc Comic produced in England from 1975-1976
 Vulcan (Marvel Comics), a character in the Marvel Comics universe
 Black Vulcan, a fictional African American superhero on the animated series Super Friends
 Vulcan, a fictional planet featured in the Doctor Who serial The Power of the Daleks
 Vulcan Raven, a character in Metal Gear Solid

Places 
 Vulcan, Alberta, Canada
 Vulcan Airport
 Vulcan, Romania, in Hunedoara County in the Jiu Valley
 Vulcan, Braşov, also in Romania in Braşov County
 Vulcan, Michigan, United States
 Vulcan, Missouri, United States
 Vulcan (volcano), a volcano in Papua New Guinea
 Vulcano, a small volcanic island  in the Tyrrhenian Sea

Companies 
 Vulcanair, an Italian based manufacturer of light twin-engined aircraft that took over Partenavia
 Vulcan (cars), a Southport, England based car manufacturer
 Vulcan Corporation, a materials manufacturing company in Clarksville, Tennessee
 Vulcan Foundry, a former British locomotive builder
 Vulcan Iron Works, a former United States locomotive builder
 Vulcan Materials Company, a construction materials company headquartered in Birmingham, Alabama
 Vulcan Inc., an investment company formed by Microsoft cofounder Paul Allen
 Stettiner Vulcan AG, a former shipyard in Hamburg, Germany
 Vulcan (shipyard) (1857–1944), the shipyard in Szczecin, Poland
 Vulcan Media, an educational software company from Poland
 Vulcan Software, a British computer game company
 Vulcan Stoves, a maker of commercial ranges, ovens, steam equipment, fryers griddles and broilers

Vehicles 
 Avro Vulcan, British delta-wing subsonic bomber aircraft
 Vickers Vulcan, a single engined biplane of the 1920s
 Ford Vulcan engine, a 3.0L V6 automobile engine
 Kawasaki Vulcan, a cruiser-type motorcycle
 Kawasaki Vulcan 400 Classic
 Kawasaki Vulcan 800 Drifter
 M167 Vulcan, a towed short-range air defense gun
 M163 VADS (Vulcan Air Defense System), a self-propelled anti-aircraft gun
 Vulcan (1874-1892), one of the ten South Devon Railway Buffalo class steam locomotives
 Vulcan (1951-1967), one of the BR 'Britannia' Class locomotives
Vulcan Railcars are a type of railcar found in preservation in New Zealand.
 HMS Vulcan, either one of two Royal Navy ships, or a Royal Navy shore establishment at Dounreay, Scotland, dedicated to the development of nuclear power

Science 
 Vulcan (hypothetical planet), a hypothetical planet between Mercury and the Sun, and Vulcanoid asteroids, hypothetical minor planets in the same place
 Vulcanization, a chemical process to improve the strength and durability of rubber
 Vulcan laser, the most intensely focused in the world, based at the Rutherford Appleton Laboratory in Chilton, Oxfordshire.

Computing 
 Vulcan processor, a type of central processing unit
 VULCAN (operating system), an operating system for some 24-bit Datacraft/Harris Corporation minicomputers
 Vulcan (programming language), a programming language, now known as dBase

Other uses 
 The "Vulcans" are the nickname of California University of Pennsylvania's sports teams.
 Vulcan statue, the largest cast iron statue in the world and the symbol of Birmingham, Alabama
 Vulcan of the alchemists, the patron deity associated with Paracelsian alchemy
 Birmingham Vulcans, a 1975 World Football League team
 M61 Vulcan, a 20mm six-barreled gatling gun
 Vulcan M-11-9, a semi-automatic, closed bolt pistol manufactured by Vulcan Armament
 The Vulcans, an informal name of George W. Bush's foreign policy advisory team for the 2000 U.S. presidential election
 The Vulcan, an occasional magazine from various organizations within the Young Fine Gael, the youth wing of the Irish Fine Gael political party
 Vulcan, the title of an EP and a song by the rock band Snake River Conspiracy
 Operation Vulcan, Allied action in Tunisia during World War II

Related pages 
 Vulcana - Welsh female bodybuilder
 Volcano