M1, M01 or M-1 may refer to:
Arts, entertainment and media M1 (Hungarian TV channel) M1 (Russian TV channel) M1 (Ukrainian TV channel) M-1 (Lithuanian radio station) 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
Economics and finance M1 (money supply measure), in economics, a measure of the money supply M1 Finance, an online financial services company
Military equipment
Vehicles
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 (M1), a WWI Royal Navy monitor (1919), an early British submarine , a Swedish Navy mine sweeper , a Swedish Royal Navy mine layer
Weapons
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
Roads and railways
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 Metro), part of the city's Metro system, Denmark M1 (Istanbul Metro), a light railway system in Istanbul, Turkey Lausanne Metro Line M1, part of the Lausanne Metro in Switzerland M1 (Paris Metro), 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, the first metro line of the Sydney Metro Sri Lanka Railways M1, diesel-electric locomotives
Roads
M1 road (Australia), different sections of the A1 highway M1 (New South Wales) Metroad 1, a former road designation in Sydney, Australia M1 (Queensland) M1 (Victoria) M-1 (Michigan highway), a road in the United States that runs from Detroit northwesterly to Pontiac M1 road (Malawi), major road in Malawi 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 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 M1 (Brisbane Metro), a bus rapid transit route in Brisbane
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 Moreland M-1, a 1929 American three-seat civil aircraft 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 US 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 M1 Support Services, an American defense contractor
See also Model 1 (disambiguation) 1M (disambiguation) ML (disambiguation) MI (disambiguation)