MGY
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MGY or a variant thereof is used as an abbreviation for:
- Megagray (MGy) and milligray (mGy), SI derived units of the gray (absorbed radiation dose)
- mgy, MGY, mmgy, MMgy, or MMGY: Million gallons per year
MGY as an identifier has been used to denote:
- Dayton-Wright Brothers Airport, IATA code
- Montgomeryshire, historic county in Wales, Chapman code
- The maritime call sign of RMS Titanic's radiotelegraph station
MGY may also refer to:
- MG Y-type, an MG car