M3, M-3 or M03 may refer to:

Computing and electronics

* Intel m3, a brand of microprocessors * M.3 (aka NF1/NGSFF), a specification for internally mounted expansion cards * Leica M3, a landmark 35mm rangefinder camera * Modula-3 (M3), a programming language * M3, a British peak programme meter standard used for measuring the volume of audio broadcasts * m3, a macro processor for the AP-3 minicomputer, the predecessor to m4 * M3, a surface-mount version of the

1N4003 The 1N400x (or 1N4001 or 1N4000) series is a family of popular one-ampere general-purpose silicon rectifier diodes commonly used in AC adapters for common household appliances. Its blocking voltage varies from 50 volts (1N4001) to 1000 volts ...

general-purpose silicon rectifier diode *

M3 (email client) Vivaldi Technologies AS is a Norwegian software development company, most known for its creation of the Vivaldi Browser. Headquartered in Oslo, Norway, it was founded in 2013 by Jon von Tetzchner and Tatsuki Tomita. Tetzchner was one of the f ...

, an unreleased email client for the Vivaldi browser

Entertainment

* M3, a comic book created by Vicente Alcazar *

M3 adapter This is a list of Nintendo DS accessories. Accessories for the Nintendo DS often came in two forms: those that worked with Slot 1 as a regular DS cartridge, and those that worked in Slot 2 (for Game Boy Advance cartridges) known as a "DS Optio ...

, a Game Boy Advance movie player * M3 (Canadian TV channel), a music and entertainment television channel *

M3 (Hungarian TV channel) M3 (M Három) is a Hungarian pay television channel owned and operated by Duna Média since 2015. The channel launched as M3D, Hungary's first 3D television channel, operating between 25 June and 13 August 2012, the end of the 2012 Summer Oly ...

, a Hungarian television channel * '' M3: Malay Mo Ma-develop'', a 2010 Philippine TV series * M3 Music Card, a 2007 flash-based MP3 player * M3 Perfect, M3 Simply and M3 Real, Nintendo DS and 3DS storage devices *'' M3: Sono Kuroki Hagane'', a 2014 Japanese anime television series

Military

Weapons

* 37 mm Gun M3, a light American anti-tank gun * M3/M3E1 Multi-role Anti-armor Anti-tank Weapon System (MAAWS) (AKA:

Carl Gustaf 8.4cm recoilless rifle The Carl Gustaf 8.4 cm recoilless rifle (, named after '' Carl Gustafs Stads Gevärsfaktori'' which initially produced it) is a Swedish developed caliber man-portable shoulder-fired recoilless rifle, initially developed by the Royal Swedis ...

), an 84 mm man-portable reloadable anti-tank recoilless rifle * 90 mm Gun M1/M2/M3, an American anti-aircraft and anti-tank gun *

105 mm Howitzer M3 The 105 mm Howitzer M3 was a U.S. light howitzer designed for use by airborne troops. The gun utilized the barrel of the 105 mm Howitzer M2, shortened and fitted to a slightly modified split trail carriage of the 75 mm pack howitzer. The ho ...

, an American light artillery piece * Benelli M3 Super 90, an Italian semi-automatic shotgun *

M3 20mm cannon The HS.404 is an autocannon originally designed and produced by Spanish/French company Hispano-Suiza in the mid-1930s. It was widely used as an aircraft, naval and land-based weapon by French, British, American and other military services, par ...

, a United States development of the Hispano-Suiza HS.404 * M3 fighting knife, a World War II American issue knife * M3 machine gun, a variant of the M2 Browning * M3 submachine gun (AKA: Grease Gun), an American submachine gun * M3 tripod, a modern tripod for the M2 Browning machine gun * M3, a code name for a United States military mission at Roosevelt Roads Naval Station in Puerto Rico

Vehicles

* M3 Amphibious Rig, a German self-propelled amphibious bridging vehicle * M3 Bradley, an American infantry fighting vehicle * M3 Gun Motor Carriage, American tank destroyer * M3 half-track, an armored military vehicle *

M3 Lee The M3 Lee, officially Medium Tank, M3, was an American medium tank used during World War II. The turret was produced in two forms, one for US needs and one modified to British requirements to place the radio next to the commander. In British Co ...

, an American medium tank; also known as "M3 Grant" in Commonwealth service * Panhard M3 PTT, a French armored personnel carrier * (M3), a WWI British Royal Navy monitor *

M3 Ram The Tank, Cruiser, Ram was a cruiser tank designed and built by Canada in the Second World War, based on the U.S. M3 Medium tank chassis. Due to standardization on the American Sherman tank for frontline units, it was used exclusively for traini ...

, a Canadian cruiser tank * M3 Scout Car, an American armored vehicle * M3 Stuart, an American light tank * , a Swedish Royal Navy mine layer * , a Swedish Navy mine sweeper (1940–1955) * , a British Royal Navy minelayer submarine of the post-WWI period

Music

* Major third (M3), a type of musical interval * Major thirds tuning (M3 tuning), a regular tuning with major-third intervals between successive strings * Minor third (m3), a type of musical interval * ''M3'' (album), a 1999 album by Mushroomhead * M3 (band), an American rock band * M3 Classic Whitesnake, a band featuring Bernie Marsden, Micky Moody and Neil Murray * M3 Records, a record label * Korg M3, a workstation synthesizer

Science and medicine

* m³, the

cubic metre The cubic metre (in Commonwealth English and international spelling as used by the International Bureau of Weights and Measures) or cubic meter (in American English) is the unit of volume in the International System of Units (SI). Its symbol is m ...

, a unit of volume * M₃, the minimal modular, but non- distributive lattice in mathematical order theory * ATC code M03, ''Muscle relaxants'', a subgroup of the Anatomical Therapeutic Chemical Classification System *

Messier 3 Messier 3 (M3; also NGC 5272) is a globular cluster of stars in the northern constellation of Canes Venatici. Discovery It was discovered on May 3, 1764, and was the first Messier object to be discovered by Charles Messier himself. Messier or ...

(M3), a globular cluster in the constellation Canes Venatici * Muscarinic acetylcholine receptor M₃, an acetylcholine receptor *

The M-3 (My Mood Monitor) Screen The My Mood Monitor Screen (aka M3 Checklist) is a quick, validated, self-rated, multi-dimensional mental health symptom checklist that screens for and monitors changes in potential mood and anxiety symptoms. The 27-item instrument assesses an ind ...

, a mental health symptom checklist

Transport

Air transport

ABSA - Aerolinhas Brasileiras ABSA Aerolinhas Brasileiras S/A d/b/a LATAM Cargo Brasil (formerly TAM Cargo) is a cargo airline based in Campinas, Brazil. It operates scheduled services within Latin America and between Brazil and the United States as well as charter services. ...

IATA airline designator M3, a cargo airline based in Campinas, Brazil * Miles M.3 Falcon, a 1930s British four-seat cabin monoplane

Automobiles

* Bisu M3, a Chinese MPV *

BMW M3 The BMW M3 is a high-performance version of the BMW 3 Series, developed by BMW's in-house motorsport division, BMW M GmbH. M3 models have been produced for every generation of 3 Series since the E30 M3 was introduced in 1986. The initial model ...

, a German compact performance car series * BYD M3, a Chinese MPV * Dongfeng Fengxing Lingzhi M3, a Chinese MPV * Haima M3, a Chinese subcompact sedan *

JAC Refine M3 The JAC Refine M3 is a compact MPV produced by JAC Motors. Overview The Refine M3 compact MPV was introduced as a near-production concept during the 2014 Beijing Auto Show. File:JAC Refine M3 01 Auto China 2014-04-23.jpg, Refine M3 Concept ...

, a Chinese MPV

Roads and routes

* Eastern Freeway (Melbourne), part of the M3 in Victoria, Australia * EastLink (Melbourne), part of the M3 in Victoria, Australia *

Highway M03 (Ukraine) Highway M03 is a Ukrainian international highway ( M-highway) connecting Kyiv with Dovzhansky on the border with Russia, where it continues into Russia as the A270. It is part of European route E40 from Kyiv to Debaltseve at which it is par ...

, an international highway connecting Kiev with Dovzhansky * M3 highway (Russia), another name for the Ukraine Highway in Russia * M-3 (Michigan highway), a state highway in the Detroit metropolitan area *

M3 motorway (disambiguation) M3 motorway may refer to: * M3 motorway or Riverside Expressway, part of the Pacific Motorway in Brisbane, Queensland, Australia * M3 motorway (Great Britain), a motorway in England * M3 motorway (Hungary), a motorway in Hungary * M3 motorway i ...

, several roads * M3 (New York City bus), a New York City Bus route in Manhattan * M3 Milton–City Centre, a bus route in Glasgow *

M3 (East London) Buffalo City (East London metropolitan area), like most South African cities, uses Metropolitan or "M" routes for important intra-city routes, a layer below National (N) roads and Regional (R) roads. Each city's M roads are independently numbere ...

, a Metropolitan Route in East London, South Africa * M3 (Cape Town), a Metropolitan Route in Cape Town, South Africa *

M3 (Pretoria) The M3 road is a short metropolitan route in the City of Tshwane in Gauteng, South Africa. It consists of only one road (Nelson Mandela Drive) in the Pretoria CBD. Route The M3 begins at a junction with the M18 route (Thabo Sehume Str ...

, a Metropolitan Route in Pretoria, South Africa *

M3 (Port Elizabeth) Port Elizabeth, like most South African cities, uses Metropolitan or "M" routes for important intra-city routes, a layer below National (N) roads and Regional (R) roads. Each city's M roads are independently numbered. These roads naturally int ...

, a Metropolitan Route in Port Elizabeth, South Africa * Route M-3 (MTA Maryland), a former bus route in Baltimore, Maryland * Jalan Datuk Wira Poh Ah Tiam, numbered M3 in Malacca, Malaysia * M3 Road (Zambia), road in Zambia

Rail transport

* LCDR M3 class, a steam locomotive class of the London, Chatham & Dover Railway * M1/M3 (railcar), a Long Island Rail Road and Metro-North Railroad railcar *

Sri Lanka Railways M3 In 1955 the state owned Ceylon Government Railway, now the Sri Lanka Railways, manufactured Sri Lanka's "first" diesel-electric locomotive using old spares of withdrawn Class S1 DMU power sets. This locomotive was named as "Jayanthi" and clas ...

, a diesel-electric locomotive class of Sri Lanka Railways *

Line M3 (Budapest Metro) Line 3 (Officially: North-South Line, Metro 3 or M3, and unofficially: Blue Line) is the third and longest line of the Budapest Metro. It runs in a general north-south direction parallel to the Danube on the Pest side, roughly following Váci � ...

, the North-South Line of the Budapest Metro, Hungary *

M3 (Copenhagen) The City Circle Line ( da, Cityringen) or M3 is a loop line of the Copenhagen Metro. It has been claimed by COWI A/S that the City Circle Line is the largest construction project to have taken place in Copenhagen during the last 400 years.

(City Circle Line or Cityringen), a future expansion of the Copenhagen Metro *

M3 (Istanbul Metro) The M3, officially referred to as the M3 Kirazli–Basaksehir Metro Line ( tr, M3 Kirazlı-Başakşehir Metro Hattı), is a , 9-station rapid transit line of the Istanbul Metro system on the European part of Istanbul, Turkey. It operates between ...

, a rapid transit line in the European part of Istanbul, Turkey * Milan Metro Line 3, a subway line serving Milan, Italy

Other uses

* M3, an ISO metric screw thread size *

M3 (economics) In macroeconomics, the money supply (or money stock) refers to the total volume of currency held by the public at a particular point in time. There are several ways to define "money", but standard measures usually include Circulation (curren ...

, a measure of the money supply *

M3 (hieroglyph) The total number of distinct Egyptian hieroglyphs increased over time from several hundred in the Middle Kingdom to several thousand during the Ptolemaic Kingdom. In 1928/1929 Alan Gardiner published an overview of hieroglyphs, Gardiner's sign ...

, the Ancient Egyptian baker's tool hieroglyph