M9, M-9 most often refers to: Beretta M9, a 9 mm pistol
M9, M-9 or M09 may refer to:
Aviation Grigorovich M-9, a Russian World War I-era biplane flying boat Miles M.9 Master, a 1939 British 2-seat monoplane advanced trainer Motor Sich Airlines, a Ukrainian airline (IATA airline designator: M9)
Computers M9-IX, a short name for the Moscow Internet Exchange Apple M9, one of the company's series of Apple motion coprocessors
Firearms and military equipment Beretta M9, the formerly standard-issue service pistol for the US Army and other forces M9M1, a 9mm/.45ACP submachine gun M-9, the export name for the Chinese missile DF-15 M9 half-track, a variant of the M2 Half Track M9 bayonet, a United States military knife M9 armored combat earthmover, a United States military earthmover M9 anti-tank rocket launcher, another name for the bazooka M9 flamethrower, flamethrower, United States M9 gun director, director used with 90mm anti-aircraft guns T40/M9 tank destroyer, American tank destroyer
Science Messier 9 (M9), a globular cluster in the constellation Ophiuchus ATC code M09 Other drugs for disorders of the musculo-skeletal system, a subgroup of the Anatomical Therapeutic Chemical Classification System M9 medium, a salt medium for cultivating Escherichia coli
Transport M9 road (disambiguation), various roads M9 (New York City bus), a New York City Bus route in Manhattan M9, a Washington, D.C. Metrobus route Sri Lanka Railways M9, Sri Lanka Railways diesel-electric locomotive M9 (railcar), a Long Island Rail Road car M9 (Istanbul Metro), a rapid transit rail line in Istanbul, Turkey AITO M9, a Chinese electric SUV Bestune M9, a Chinese minivan Geely Galaxy M9, a Chinese plug-in hybrid SUV
Other Leica M9, a camera Meizu M9, a smartphone with Android HTC One M9, a smartphone with Android "M9", a song by British band Boards of Canada, released on their Boc Maxima demo in 1996 "M9", a fictional British secret intelligence agency in the television spy show Danger Man M9, a difficulty grade in mixed climbing
See also 9M (disambiguation)