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:

• M82 X-1, a candidate black hole in Messier 82

• Shvetsov ASh-82, an aircraft engine produced in the Soviet Union

• 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

• M-82 (Michigan highway), a state highway in Michigan
• Madison County Executive Airport, an airport near Huntsville, Alabama (former FAA LID code: M82)

• Piano Concerto for the Left Hand (Ravel), M82 in the Marnat catalogue

• All pages with titles beginning with M82
• All pages with titles containing M82
• All pages with titles containing m-82
• 82 (disambiguation)