GMH may refer to:
- Gandhi Medical College, in Hyderabad, India
- General Mediterranean Holding, a Luxembourg holding company
- General Motors railway station, Melbourne, Australia
- Georgian Manganese Holding
- Gibraltar Medallion of Honour
- GivesMeHope, a user-generated blog website
- GMH railway station, Elizabeth South, South Australia
- Gray matter hyperintensity
- Guam Memorial Hospital
- Holden, the Australian car making division of General Motors
- Middle High German language