M3

M3, M-3 or M03 may refer to:

Computing and electronics

• Intel m3, a brand of microprocessors
• 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 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, a German self-propelled amphibious bridging vehicle
• M3 Bradley, an American infantry fighting vehicle
• M3 Gun Motor Carriage, American artillery
• 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
• HMS Raglan (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
• HSwMS M3, a Swedish Navy mine sweeper (1940–1955)
• HMS M3, 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, 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 (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

For military vehicles named M3, see § Vehicles.

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 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), several roads
• M3 (New York City bus), a New York City Bus route in Manhattan
• M3 road (Cape Town), an expressway in Cape Town, 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, 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

See also

• 3M (disambiguation)
• M1903 (disambiguation)
• MThree (Coquitlam), a high-rise condominium in British Columbia
• List of highways numbered 3