M series may refer to:

Technology Computers M series (Apple silicon), a family of systems on a chip M series (computer), designed in the USSR Juniper M series, of routers ThinkCentre M series, of desktop computers Sony Vaio M series, of desktop and netbook computers

Mobile phones Samsung Galaxy M series Sony Ericsson M series Meizu M series

Transportation Bedford M series, a truck chassis Cummins M-series engine, a diesel engine for buses and trucks Dodge M-series chassis, a motorhome chassis M series (Toronto subway) Rover M-series engine, a line of 4-cylinder gasoline car engines Studebaker M-series truck TVR M series, a series of sports cars

Other uses M-series bayonet, for rifles Leica M series, a series of cameras QI (M series), the twelfth series of quiz show QI Mobile Legends: Bang Bang World Championship, an annual esports tournament

See also M (disambiguation)