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 M82 X-1, a candidate black hole in Messier 82 Aviation Shvetsov ASh-82, an aircraft engine produced in the Soviet Union Military 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 M-82 (Michigan highway), a state highway in Michigan Madison County Executive Airport, an airport near Huntsville, Alabama (former FAA LID code: M82) See also 82 (disambiguation)