M50

M50 or M-50 may refer to:

In transportation:

• M-50 (Michigan highway), a state highway in Michigan
• M50 motorway (Great Britain), a motorway in England
• M50 motorway (Ireland), a motorway in Ireland
• BMW M50, a 1989 automobile piston engine
• Suzuki Boulevard M50, a 800cc V-twin muscle cruiser by Suzuki Motor Company
• The FAA identifier of Boardman Airport in Boardman, Oregon

In science:

• Messier 50 (M50), an open star cluster in the constellation Monoceros

In military equipment:

• M50 Joint Service General Purpose Mask, United States military gas mask
• M50 Super Sherman, an Israeli tank
• M50 Reising submachine gun, an American submachine gun
• M50 Ontos, an American tank destroyer
• Madsen M-50, a Danish submachine gun
• Myasishchev M-50 'Bounder', a Soviet bomber

other 

• a Samsung Sens laptop computer model