M6, M06, M.6, or M-6 may refer to:
Entertainment Groupe M6, a French media holding company M6 (TV channel), a French television channel Mike & The Mechanics (1999 album), by Mike & The Mechanics "M6", a song on the album Centralia by the metal band Car Bomb
Military and weapons M6 bayonet, a bayonet for the M14 rifle M6 bomb service truck, a truck used to move bombs during World War II M6 gun motor carriage, an American World War II light truck armed with an anti-tank gun M6 gun, a 3" towed artillery piece M6 heavy tank, a World War II heavy tank design that never entered full production M6 Linebacker, an anti-aircraft variant of the M2 Bradley infantry fighting vehicle M6 mine, a United States metal-cased, circular anti-tank landmine C15TA armoured truck (Danish designation: M6 Mosegris) M6 tractor, a high-speed artillery tractor M6 mortar, a 60mm mortar used by the British Army Hirtenberger M6C-210 Commando, a 60mm mortar used by various armies LWRC M6, a series of US military carbines based on the M4 carbine Fokker M.6, a 1916 German two-seat experimental fighter aircraft Macchi M.6, a 1917 Italian flying boat fighter prototype
Survival guns M6 aircrew survival weapon, a .22 Hornet over .410 gauge combination gun Springfield Armory M6 Scout, a .22 LR over .410 gauge combination gun Chiappa M6 survival gun, a 12 gauge over .22 LR combination gun
Science and technology Butterfly Cluster (catalogued as Messier 6 or M6), an open star cluster in the constellation Scorpius M6 (cipher), a block cipher used by Digital Transmission Content Protection M6, a British peak programme meter standard used for measuring the volume of audio broadcasts Meizu M6 miniPlayer, flash-based portable media player M6, one of the 1N400x rectifier diodes Apple M6, a system on a chip Leica M6, a rangefinder camera once popular among photojournalists Canon EOS M6, a mirrorless digital camera SureFire M6 Guardian, a flashlight M6, an ISO metric screw thread
Transport Automobiles BMW M6, a high-performance 6 Series automobile BYD M6 (2010), a minivan BYD M6 (2024), electric version of the BYD Song Max MPV BMW M30 or M06, a 1968 straight-6 engine M6 Presto-Matic, a semi-automatic transmission made by Chrysler McLaren M6A, a racing car built by McLaren for the Can-Am series Haima M6, a saloon Haval M6, an SUV Refine M6, an MPV Trumpchi M6, an MPV
Aviation Amerijet International (IATA airline designator: M6), a cargo airline based in the US Havre de Grace Seaplane Base (FAA LID: M06) Miles M.6 Hawcon, a 1930s British experimental monoplane M-6 aero-engine, a 1920 Soviet copy of the Hispano-Suiza 8Fb V-8 aero engine
Public transport Bucharest Metro Line M6, a planned metro line of the Bucharest Metro M6 (New York City bus), a former New York City Bus route in Manhattan M6 (Istanbul Metro), a short metro line in Istanbul, Turkey Sri Lanka Railways M6, a diesel-electric locomotive used in Sri Lanka M6 (railcar), a Metro-North Railroad railcar
Roads Frederik Meijer Trail, formerly the M-6 Trail, a bike trail running along the M-6 freeway in the Grand Rapids, Michigan area, US Highway M06 (Ukraine), a road in Ukraine M6 motorway, a motorway in the UK M6 Toll, a toll motorway which relieves traffic on the neighbouring M6 M-6 (Michigan highway), a state highway in the Grand Rapids, Michigan area, US M6 highway (Russia), linking Moscow to the Caspian Sea M6 motorway (Hungary), a north–south motorway connecting Budapest to Pécs and Croatia M6 motorway (Ireland), a motorway forming part of the N6 Dublin to Galway national primary route M6 road (Zambia), in Zambia M6 road (Malawi), in Malawi M6 Motorway (Sydney), a proposed motorway in New South Wales, Australia
South Africa M6 (Cape Town), a Metropolitan Route in Cape Town M6 (Johannesburg), a Metropolitan Route in Johannesburg M6 (Pretoria), a Metropolitan Route in Pretoria M6 (Gqeberha), a Metropolitan Route in Gqeberha/Port Elizabeth
Other transport Ursynów M-6, a prototype hovercraft
People Mark Sixma (born 1983), Dutch trance and house producer Mohammed VI of Morocco (born 1963), King of Morocco Raúl Meza Ontiveros (1966–2007), Mexican suspected drug lord, nicknamed "M6"
Other uses M6, a difficulty grade in mixed climbing MLBB M6 World Championship, the sixth Mobile Legends: Bang Bang World Championship held in 2024
See also 6M (disambiguation) M6X, in the List of Metrobus routes (Washington, D.C.), US