| Acronym | Definition |
|---|
| MHRG➣Midland Homoeopathy Research Group |
| MHRG➣Mental Health Reference Group (UK; est. 1996) |
| MHRG➣Melbourne Historical Research Group (est. 2000; UK) |
| MHRG➣Mikmaq Health Research Group (Indians; Canada) |
| MHRG➣Modified High Resistance Grounding |