Mark III

Mark III or Mark 3 often refers to the third version of a product, frequently military hardware. "Mark", meaning "model" or "variant", can be abbreviated "Mk."

Mark III or Mark 3 may refer to:

Arts and entertainment

 * Mk III: The Final Concerts, a 1975 concert album by Deep Purple
 * Emergency Medical Hologram Mark III, a character on the television series Star Trek: Voyager
 * Mark III, a fictional cybernetic tank in the game Ogre
 * Mark III Flying Car, a fictional vehicle driven by Danger Mouse
 * Cobra Mk III, a spaceship in the computer game Elite
 * MK III, a 2013 album by Steam Powered Giraffe

Military and weaponry

 * Mark III, a variant of the British Mark I tank
 * Mark III, an alternate name for the Fat Man atomic bomb used on Nagasaki, in use until 1949
 * Supermarine Spitfire Mk III; a single 1940 British fighter aircraft pre-production prototype
 * Mk III Turtle helmet (1944); British Army helmet that first saw action in the Normandy Landings
 * Merkava Mark 3 (1989); battle tank of Israel Defense Forces
 * Ruger MK III (2004), an American handgun

Other vehicles

 * Geosynchronous Satellite Launch Vehicle Mark III, a launch vehicle
 * Aston Martin DB Mark III (1957-1959), a British luxury sports car
 * AC Cobra MkIII (aka Shelby Cobra), an American-engined British sports car produced intermittently since 1962
 * Superformance MkIII, a mass-produced replica of the AC Cobra MkIII
 * Continental Mark III (1958, 1969–1971), an American personal luxury car
 * British Rail Mark 3 (1976); a rail carriage design for high-speed and regular service
 * Kolb Mark III ultralight aircraft

Other technologies

 * Mark III (radio telescope), a radio telescope in England, constructed in 1966
 * Mark III (space suit), a NASA space suit prototype
 * Mark III containment design, a third generation General Electric BWR-6 boiling water nuclear reactor design
 * Camera models:
 * Canon EOS-1D Mark III
 * Canon EOS-1Ds Mark III
 * Harvard Mark III, an early computer built at Harvard University and used by the US Navy
 * Mesa Boogie Mark III, an electric guitar amplifier
 * Sega Mark III, the original Japanese branding of Sega Master System, a video game console
 * Vox Mark III, a teardrop-shaped electric guitar of the 1960s

Religion

 * Mark 3 or Mark III, the third chapter of the Gospel of Mark in the New Testament of the Christian Bible
 * Pope Mark III of Alexandria, patriarch of the Coptic Church from 1116 to 1189