MGC can refer to:
- Machine Gun Corps
- Malvern Girls College
- Massachusetts General Court, legislature of that U.S. state
- Media Gateway Controller, a device in Voice over IP networks
- Medical Grade Cannabis
- Megestrol caproate, a progestin
- Mekong-Ganga Cooperation
- Melbourne Girls' College
- MGC, a British sports car.
- Michael Gordon Clifford
- Middle Georgia College
- Midsize Gas Carrier, a type of ship
- Midwest Gaming Classic, video game trade show in Wisconsin
- Mississippi Gulf Coast
- Mitsubishi Gas Chemical Company, Inc.
- Museums and Galleries Commission
- The Mircom Group of Companies
- The post-nominal for recipients of the British Columbia Medal of Good Citizenship
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