M1

M1, M01 or M-1 may refer to:

Arts, entertainment & media

 * M-1 (rapper), one half of hip hop duo Dead Prez
 * Korg M1, a keyboard synthesizer
 * Leica M1, a 1959 35 mm camera model
 * Olympus OM-1, a 1972 manually operated 35mm single-lens reflex camera
 * M1 (TV channel), news channel of the Hungarian MTVA
 * M-1 (Lithuanian radio station)
 * M1 (Ukraine), a television channel

Economics and finance

 * M1 (money supply measure), in economics, a measure of the money supply
 * M1 Finance, an online financial services company

US Armed Forces

 * M1 Abrams, a main battle tank
 * M1 armored car
 * M1 Combat Car, an early tank
 * M1 Light Tractor
 * M1 Medium Tractor
 * M1 Heavy Tractor

Other

 * Bristol M.1, a 1916 British fighter aircraft
 * HMS Abercrombie (M1), a WWI Royal Navy monitor
 * HMS M1 (1919), an early British submarine
 * HSwMS M1, a Swedish Navy mine sweeper
 * HSWMS Älvsnabben, a Swedish Royal Navy mine layer

US Armed Forces

 * 120 mm gun M1, an anti-aircraft gun
 * 155 mm gun M1, a field artillery gun
 * 20 mm aircraft gun M1 or French Hispano-Suiza HS.404
 * 240 mm howitzer M1, WWII
 * 37 mm gun M1, anti-aircraft
 * 40 mm automatic gun M1 or Swedish Bofors 40 mm Automatic Gun L/60
 * 57 mm gun M1, or British Ordnance QF 6-pounder
 * 76 mm gun M1, WWII
 * 8-inch gun M1, or M115 howitzer
 * 90 mm gun M1, dual-purpose gun
 * M1 bayonet
 * M1 carbine, WWII
 * M1 chemical mine, WWII
 * M1 flamethrower, WWII
 * M1 frangible grenade, WWII
 * M1 Garand, WWII rifle
 * M1 mortar
 * M1 rocket launcher "Bazooka", WWII rocket launcher
 * M1 Thompson submachine gun
 * M1 underwater defense gun, or Underwater Defense Gun Mark 1 Mod 0

Other

 * 35.5 cm Haubitze M1, a German WWII howitzer
 * Benelli M1, a semi-automatic shotgun
 * Guncrafter Industries M1 or Model No. 1, a handgun
 * M1 (missile), French
 * M1 mine

Helmets

 * M1 helmet

Science and technology

 * the Crab Nebula, also known as Messier object M1
 * ATC code M01 Anti-inflammatory and antirheumatic products, a subgroup of the Anatomical Therapeutic Chemical Classification System

Computing

 * a codename for Cyrix 6x86 processor
 * M1-DA, M1, or VESA Plug and Display connector
 * a part number for a 1N400x general-purpose diode
 * Apple M1 system on a chip

Biology

 * Primary motor cortex or M1, a symbol of the primary motor cortex in mammals in neurology
 * M1 protein, a matrix protein of the influenza virus
 * Muscarinic acetylcholine receptor M1, a receptor in the human autonomic nervous system
 * British NVC community M1, Sphagnum auriculatum bog pool community
 * 20-O-beta-D-glucopyranosyl-20(S)-protopanaxadiol, a ppd-type monoglucoside ginsenoside metabolized by intestinal bacteria
 * M1 macrophage, a phenotype of macrophage

Medicine

 * Slang name for methylone

Railways

 * Bucharest Metro Line M1, part of the Bucharest Metro, Romania
 * Chesapeake and Ohio class M-1, a steam-turbine locomotive
 * Line 1 (Budapest Metro), the first line of Budapest Metro, Hungary
 * LNER Class M1, a class of British steam locomotives
 * M-1 Rail Line, now the QLine, streetcar service in Detroit
 * M1 (Copenhagen), part of the city's Metro system, Denmark
 * M1 (Istanbul Metro), a light railway system in Istanbul, Turkey
 * M1 (Lausanne Métro), part of the Lausanne Metro in Switzerland
 * M1 (Paris Métro), the first rolling stock on the Paris Metro in 1900
 * M1 (İzmir Metro)
 * M1/M3 (railcar), a series of electric multiple unit cars on the Long Island Rail Road and Metro-North Railroad
 * Metro M1 (Prague), metro kit M1, which is used on line C of the Prague Metro
 * Milan Metro Line 1
 * M1 (Warsaw), the first metro line of the Warsaw Metro
 * PRR M1, a class of steam locomotive
 * M series (Toronto subway), former rolling stock of the Toronto subway
 * M1 Metro North West & Bankstown Line, Sydney Metro service

Roads

 * M1 road (Australia), different sections of the A1 highway
 * M1 (New South Wales)
 * M1 (Queensland)
 * M1 (Victoria)
 * Metroad 1, a road in Sydney, Australia
 * M-1 (Michigan highway), a road in the United States that runs from Detroit northwesterly to Pontiac
 * M1 highway (Belarus), a road connecting the border with Poland and the border with Russia
 * M1 highway (Russia), a road connecting Moscow and the border with Belarus
 * M1 (East London), a Metropolitan Route in East London, South Africa
 * M1 (Johannesburg), a Metropolitan Route in Johannesburg, South Africa
 * M1 (Pretoria), a Metropolitan Route in Pretoria, South Africa
 * M1 (Durban), a Metropolitan Route in Durban, South Africa
 * M1 (Port Elizabeth), a Metropolitan Route in Port Elizabeth, South Africa
 * M1 motorway (Hungary), a road connecting Budapest and Győr
 * M1 motorway (Northern Ireland), a road connecting Belfast and Dungannon
 * M1 motorway (Pakistan), a 155 km road connecting Peshawar and Rawalpindi
 * M1 motorway (Republic of Ireland), a road connecting Dublin to the border with Northern Ireland
 * M1 motorway, a road in England connecting London and Leeds
 * Highway M01 (Ukraine), a road connecting Kyiv and the border with Belarus
 * M1 Road (Zambia)

Bus

 * Route M-1 (MTA Maryland), a bus route in Baltimore, Maryland and its suburbs
 * M1 (New York City bus), a New York City Bus route in Manhattan

Vehicles

 * M1 category vehicle, a classification of passenger vehicles under the United Nations Economic Commission for Europe

Aviation and aerospace

 * Hakuto-R Mission 1, private Japanese lunar landing mission
 * M-1 (rocket engine), the largest liquid Hydrogen and LOx rocket engine ever designed
 * Martin M-1, glider
 * Matteson M-1, glider
 * Miles M.1 Satyr, a 1930s British single-seat aerobatic biplane
 * Verville-Sperry M-1 Messenger - 1922

Automobiles

 * BMW M1, a German mid-engined sports car
 * Great Wall Haval M1, a Chinese subcompact crossover
 * Minardi M01, an Italian 1999 Formula One racing car
 * Riich M1, a Chinese city car

Motorcycles

 * Yamaha YZR-M1, a Japanese motorcycle

Miscellaneous

 * M-1 Global or M-1 Mixfight, a mixed martial arts sports organization
 * M-1 visa, a vocational training student visa for the USA
 * M1 (Singaporean company), a telecommunications company in Singapore
 * M1 World Championship, the first esports world championship for the mobile game Mobile Legends: Bang Bang held in 2019
 * M1, a difficulty grade in mixed climbing