MGSM is an abbreviation which can refer to:
*Macquarie Graduate School of Management, now part of
Macquarie Business School.
*
Military General Service Medal
__NOTOC__
The Military General Service Medal (MGSM) was a campaign medal approved in 1847 and issued to officers and men of the British Army in 1848.Including officers and men of the King's German Legion, Brunswick Oels and Chasseurs Britanniques, ...
, a UK military service medal
{{Disambig