M3, M-3 or M03 may refer to:

Computing and electronics

Apple M3 Apple M3 is a series of ARM architecture family, ARM-based system on a chip (SoC) designed by Apple Inc., part of the Apple silicon series, as a central processing unit (CPU) and graphics processing unit (GPU) for its Mac (computer), Mac deskto ...

, a central processing unit in the Apple M series * 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 Modula-3 is a programming language conceived as a successor to an upgraded version of Modula-2 known as Modula-2+. It has been influential in research circles (influencing the designs of languages such as Java, C#, Python and Nim), but it ha ...

(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 general-purpose silicon rectifier diode * M3 (email client), an unreleased email client for the Vivaldi browser

Entertainment

* M3, a comic book created by Vicente Alcazar * M3 adapter, a Game Boy Advance movie player * M3 (Canadian TV channel), a music and entertainment television channel * M3 (Hungarian TV channel), 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), 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, an American light artillery piece * Benelli M3 Super 90, an Italian semi-automatic shotgun * M3 20mm cannon, 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 The M3 Amphibious Rig is a self-propelled, amphibious vehicle, amphibious bridging vehicle and ferrying vehicle that is used for the transportation of tanks and other vehicles across water obstacles. Development and service Originally developed b ...

, a German self-propelled amphibious bridging vehicle *

M3 Bradley The M3 Bradley cavalry fighting vehicle (CFV) is an American tracked Armoured reconnaissance, armored reconnaissance vehicle manufactured by BAE Systems Platforms & Services (formerly United Defense). A member of the Bradley Fighting Vehicle ...

, an American infantry fighting vehicle * M3 Gun Motor Carriage, American tank destroyer * M3 half-track, an armored military vehicle * M3 Lee, 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, 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 In music theory, a third is a Interval (music), musical interval encompassing three staff positions (see Interval (music)#Number, Interval number for more details), and the major third () is a third spanning four Semitone, half steps or two ...

(M3), a type of musical interval *

Major thirds tuning Among guitar tunings#Alternative, alternative tunings for guitar, a major-thirds tuning is a regular tunings, regular tuning in which each interval (music), interval between successive open string (music), open strings is a major third ("M3" in m ...

(M3 tuning), a regular tuning with major-third intervals between successive strings *

Minor third In music theory, a minor third is a interval (music), musical interval that encompasses three half steps, or semitones. Staff notation represents the minor third as encompassing three staff positions (see: interval (music)#Number, interval numb ...

(m3), a type of musical interval * ''M3'' (album), a 1999 album by Mushroomhead * M3 (band), an American rock band *

M3 Classic Whitesnake M3, M-3 or M03 may refer to: Computing and electronics * Apple M3, a central processing unit in the Apple M series * Intel m3, a brand of microprocessors * M.3 (computing), M.3 (aka NF1/NGSFF), a specification for internally mounted expansion ...

, 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, a unit of volume * M₃, the minimal modular, but non- distributive lattice in mathematical order theory *

ATC code M03 M03A Muscle relaxants, peripherally acting agents M03AA Curare alkaloids :M03AA01 Alcuronium :M03AA02 Tubocurarine :M03AA04 Dimethyltubocurarine M03AB Choline derivatives :M03AB01 Suxamethonium M03AC Other quaternary ammonium compounds :M03AC01 ...

, ''Muscle relaxants'', a subgroup of the Anatomical Therapeutic Chemical Classification System *

Messier 3 Messier 3 (M3; also NGC 5272) is a globular cluster located 33.9 thousand light years from Earth in the northern constellation of Canes Venatici. It is one of the largest and brightest globular clusters discovered with around 500,000 stars. Di ...

(M3), a globular cluster in the constellation Canes Venatici * Muscarinic acetylcholine receptor M₃, an acetylcholine receptor * The M-3 (My Mood Monitor) Screen, a mental health symptom checklist

Transport

Air transport

* ABSA - Aerolinhas Brasileiras 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, 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, 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), an international highway connecting Kyiv 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), 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), a Metropolitan Route in East London, South Africa * M3 (Cape Town), a Metropolitan Route in Cape Town, South Africa * M3 (Pretoria), a Metropolitan Route in Pretoria, South Africa * M3 (Port Elizabeth), 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 Jalan Datuk Wira Poh Ah Tiam (Malacca state route ), also known as Jalan Lorong Pandan, is a major highway in Malacca state, Malaysia. It was built in April 2007 and was named after former Malacca's State Assemblyman for Machap Baru, Machap and ...

, numbered M3 in Malacca, Malaysia * M3 road (Zambia), a road in Zambia * M3 road (Malawi), a road in Malawi

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, a diesel-electric locomotive class of Sri Lanka Railways * Line M3 (Budapest Metro), the North-South Line of the Budapest Metro, Hungary * M3 (Copenhagen) (City Circle Line or Cityringen), a future expansion of the Copenhagen Metro * M3 (Istanbul Metro), 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), a measure of the money supply * M3 (hieroglyph), the Ancient Egyptian baker's tool hieroglyph * MLBB M3 World Championship, the third esports world championship for the mobile game Mobile Legends: Bang Bang held in 2021 * M3, a difficulty grade in mixed climbing