Milan Subway (Metropolitana di Milano) Roads List of M2 roads M2 (Brisbane), Australia M2 (Johannesburg), a Metropolitan Route in Johannesburg, South Africa M2 (Pretoria), a Metropolitan Route in Pretoria, South Africa M2 (Sydney), Australia M2 motorway (Great Britain) Vehicles M2 (railcar), a Metro-North Railroad railcar BMW M2, a variant of the BMW 2 Series Freightliner M2, a cubetruck and chassis variants LNER Class M2, a class of British steam locomotives Science M2 protein, an ion channel in the cell membrane of the influenza A virus ATC code M02, Topical products for joint and muscular pain, a subgroup of the Anatomical Therapeutic Chemical Classification System British NVC community M2, a mire biological community in the United Kingdom Messier 2, a globular cluster in the constellation Aquarius Muscarinic acetylcholine receptor M2, a muscarinic receptor for acetylcholine found mainly in the heart M2 or M2, the principal lunar semi-diurnal constituent of tides on Earth M2, a form of high speed steel in the tungsten-molybdenum series M2 macrophage, a phenotype of macrophage M2 (economics), a measure of the money supply Other M2 (Mazda), a marketing approach by Mazda M2 Group, an Australian seller of telecommunications services, power, gas, and insurance products M-2 visa, a type of United States visa for the dependents of an individual with an M-1 visa Leica M2, a 35 mm rangefinder camera introduced in 1957 Panasonic M2, a video game console design m2 or square metre, a unit of area M2, one of the ISO metric screw thread sizes M2 World Championship, the second esports world championship for the mobile game Mobile Legends: Bang Bang held in 2021 M2, a difficulty grade in mixed climbing See also M² (disambiguation) MII (disambiguation) Model 2 (disambiguation) MM (disambiguation) 2M (disambiguation)