M4 may refer to:

• m4 (computer language), a macro processing language
• Messier 4, a globular cluster in the constellation Scorpius
• M4 money supply, in UK economics, equivalent to the M3 in the US; see also Money supply
• M4 metric sized Screw
• M4 A Member of Newcastle online

In the military: m4 is a macro processing language designed by Brian Kernighan and Dennis Ritchie. ... Globular Cluster M4 (also known as Messier Object 4, Messier 4, M4, or NGC 6121) is a globular cluster in the Scorpius constellation. ... The Globular Cluster M80 in the constellation Scorpius is located about 28,000 light years from the Sun and contains hundreds of thousands of stars. ... Scorpius (Latin for scorpion, symbol , Unicode ♏) is one of the constellations of the zodiac. ... With reference to the UK economy, the M4 is a definition of the money supply denoting Broad Money, a wide definition of the volume of sterling in the economy, encompassing notes and coin as well as money held in bank accounts. ... The examples and perspective in this article or section may not represent a worldwide view. ... Screws come in a variety of shapes and sizes for different purposes. ...

• M4 Sherman, the main allied tank in World War II
• M4 carbine, a family of firearms descended from the M16 and AR-15
• Benelli M4 Super 90, also known as the M1014 Combat Shotgun or Joint Service Combat Shotgun
• Myasishchev M-4, a 1950s Soviet strategic bomber, also known as the Molot, Hammer, or Bison
• M4 SLBM, a French Submarine Launched Ballistic Missile
• M4 (cipher), the four-rotor Naval Enigma
• M4 flame fuel thickening compound

In transportation: WWII foreign variants and use: Lend-Lease Sherman tanks Post-WWII foreign variants and use: Postwar Sherman tanks The Medium Tank M4 was the main tank designed and built by the United States for allied forces in World War II, totaling roughly 50,000 tanks plus thousands more derivative vehicles... The M4 Carbine is a family of firearms tracing its lineage back to earlier carbine versions of the M16, all based on the original AR-15 made by ArmaLite. ... a. ... The Myasishchev M-4 Molot (Russian: Hammer, NATO reporting name Bison) is a four-engined strategic bomber, designed by Vladimir Myasishchev and developed by the Soviet Union in the 1950s to provide a bomber capable of attacking targets in North America. ... The M-4 was a French Submarine Launched Ballistic Missile (SLBM) deployed on the nuclear Redoutable class submarines (except the Redoutable herself, which was not reffited) They entered service on the 1 May 1985. ... A three-rotor German military Enigma machine showing, from bottom to top, the plugboard, the keyboard, the lamps and the finger-wheels of the rotors emerging from the inner lid (version with labels). ... M4 flame fuel thickening compound is a nonhygroscopic thickener, adi-acid aluminum soap of isooctanoic acides derived from isooctyl alcohol or isooctyl aldehyd, which are obtained from the oxidization of petroleum. ...

• M4 motorway, a road between London and West Wales via Swindon
• M4 motorway, a road in the Republic of Ireland running from Lucan to west of Kinnegad on the Dublin-Sligo route
• Metroad 4 and/or M4 Western Motorway, in Sydney, New South Wales
• M-4 (Michigan highway), a former road designation of M-134 and M-10 in Michigan.

an m4 can also be a big weapon the american army use. The M4 motorway is a motorway in Great Britain linking London with Wales. ... The N4 road is a National primary route in the Republic of Ireland, running from Dublin to the northwest of Ireland and Sligo Town. ... Metroad 4 or M4 is one of Sydney, Australias Metroads. ... The M4 Western Motorway (also known as the M4 Motorway or simply M4) is a motorway in central Sydney, New South Wales, Australia. ... This is about the city of Sydney in Australia. ... M-4, was formerly the designation of two different routes in the U.S. state of Michigan. ... M-134 is a state trunkline route in the Upper Peninsula of the U.S. state of Michigan. ... M-10, also known as the John C. Lodge Freeway, and Northwestern Highway. ... Official language(s) None (English, de-facto) Capital Lansing Largest city Detroit Area  Ranked 11th  - Total 97,990 sq mi (253,793 km²)  - Width 239 miles (385 km)  - Length 491 miles (790 km)  - % water 41. ...

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