MGH
MGH may refer to:

 Bad Mergentheim (vehicle registration plate), Germany
 Margate Airport (IATA code), South Africa
 Massachusetts General Hospital, Boston, US
 Charles/MGH station, near Massachusetts General Hospital
 Montreal General Hospital, Canada
 Michael Garron Hospital, Toronto, Canada
 Monumenta Germaniae Historica, a series of German history primary sources
 Microglandular hyperplasia, a cervical lesion