M82, M 82 or M-82 most often refers to:
- Barrett M82, a .50 caliber rifle
- Messier 82, a galaxy
M82, M 82 or M-82 may also refer to:
Astronomy
edit- M82 X-1, a candidate black hole in Messier 82
Aviation
edit- Shvetsov ASh-82, an aircraft engine produced in the Soviet Union
Military
edit- Arsenal M82, an 82 mm mortar
- Parker-Hale M82, 7.62-caliber rifle
- Valmet M82, an assault rifle
- HMAS Huon (M 82), a Royal Australian Navy minehunter
Transportation
edit- M-82 (Michigan highway), a state highway in Michigan
- Madison County Executive Airport, an airport near Huntsville, Alabama (former FAA LID code: M82)