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
* The FAA identifier of Boardman Airport in Boardman, Oregon

In science:
* Messier 50 (M50), an open star cluster in the constellation Monoceros

In firearms and military equipment:
* M50 Super Sherman, an Israeli tank
* M50 Reising submachine gun, an American submachine gun
* Myasishchev M-50 (also called Myasishchev M-50 Bounder), a Soviet four-engine supersonic bomber prototype
* Ontos M50, an American anti-tank platform

; other :
* a Samsung Sens laptop computer model

* M50 Marketing 50, an elite group of the top 50 global marketers who meet several times a year