M18

M18 or M-18 may refer to:

Aircraft

• Messerschmitt M 18, an early German airliner
• Miles M.18, a Miles aircraft
• Mooney Mite M-18, a low-wing monoplane
• PZL-Mielec M-18 Dromader, an agricultural and aerial-firefighting aircraft

Firearms and military equipment

• M18 Claymore, an American anti-personnel landmine
• M18 Hellcat, an American tank destroyer used in World War II
• AN M18, a colored smoke grenade
• M18 recoilless rifle, a late-World War II recoilless rifle

Roads and highways

• M18 motorway (Great Britain)
• M18 motorway (Ireland)
• List of M18 roads

Other

• M18 metric screw thread
• Messier 18 (M18), an open star cluster in the constellation Sagittarius
• M18 or M-18, Mara 18, Central American street gang
• Hope Municipal Airport, FAA location identifier M18
• A line of 18-volt power tools manufactured by Milwaukee Electric Tool Corporation
• The house of students at Bauhaus University, Weimar