| Acronym | Definition |
|---|
| MCG | Medical College of Georgia |
| MCG | Melbourne Cricket Ground |
| MCG | Microgram |
| MCG | Mouvement Citoyens Genevois (French) |
| MCG | Manchester Craftsmen's Guild (jazz band) |
| MCG | Motorola Computer Group |
| MCG | Major Contractors Group (UK) |
| MCG | Macquarie Communications Infrastructure Group (Australia) |
| MCG | Magnetocardiogram |
| MCG | Magnetocardiographic (recordings) |
| MCG | Morphological Catalogue of Galaxies |
| MCG | Museums Computer Group (UK) |
| MCG | Millennium Challenge Georgia Fund |
| MCG | Modèle de Circulation Générale (General Circulation Model) |
| MCG | Mclaughlin Consulting Group |
| MCG | Mendip Caving Group (UK) |
| MCG | Mcgregor, Texas |
| MCG | Museums Copyright Group (Europe) |
| MCG | Muslim Consumer Group |
| MCG | Musee Cantonal de Geologie (French) |
| MCG | Mobile Communications Group |
| MCG | Management Compensation Group |
| MCG | Marvel Comics Group |
| MCG | Marine Chemistry and Geochemistry |
| MCG | Mediterranean Cooperation Group |
| MCG | Mercer Consulting Group |
| MCG | MechCommander Gold (game) |
| MCG | Minnesota Coconut Growers |
| MCG | Midwest Consulting Group, Inc |
| MCG | Matthias-Claudius-Gymnasiums (German school) |
| MCG | Malaysian Culture Group |
| MCG | Microcomputer Consulting Group, Inc (New York) |
| MCG | Mobility Central Group |
| MCG | Mary Campbell Gallagher |
| MCG | Menlo Consulting Group, Inc. (California) |
| MCG | Methylcrotonylglycine |
| MCG | Mindbank Consulting Group |
| MCG | Montgomery Coscia Greilich LLP (Plano, TX) |
| MCG | Mid-Course Guidance |
| MCG | Multicultural Greek Council |
| MCG | Mount Carmel Guild |
| MCG | McFadyen Consulting Group, Inc. |
| MCG | Missional Community Group |
| MCG | Michigan Consolidated Gas Company |
| MCG | Melnick Consulting Group (Woodland Hills, California) |
| MCG | Metropolitan Consulting Group |
| MCG | Monash Campus Grid |
| MCG | Mushroom Club of Georgia |
| MCG | Metaphysical Center of Gettysburg |
| MCG | Monitor Control Group |
| MCG | Mobile Command Group |
| MCG | Metal Coated Graphite |
| MCG | Metro Consulting Group |
| MCG | Millimeter Wave Contrast Guidance |
| MCG | Medium-Caliber Gun |
| MCG | Marantha Church of God |
| MCG | Mega Chain Gun (Quake gaming) |
| MCG | Multi-Radio Conflict Graph |
| MCG | Mapping Class Group (mathematics) |
| MCG | Montgomery County Government (various locations) |
| MCG | Manitowoc Crane Group (various locations) |
| MCG | Mysterious Cities of Gold (TV show; also seen as MCOG) |