| Acronym | Definition |
|---|
| MCOG | Mysterious Cities of Gold (TV show; also seen as MCG) |
| MCOG | Mendocino Council of Governments (Ukiah, CA) |
| MCOG | Massively Casual Online Game (Playboy) |
| MCOG | Maritime Certified Organic Growers (Canada) |
| MCOG | Macedonia Church of Grovetown |
| MCOG | Mayors' Council of Guam |
| MCOG | Midcoast Council of Governments (Maine) |
| MCOG | Middlebury College Organic Garden (Middlebury, VT) |
| MCOG | Mobile Crane Operators Group (California) |
| MCOG | Marine Consultants and Officials Group (LinkedIn member group) |
| MCOG | Moeco Cambodia Oil & Gas (Cambodia) |
| MCOG | Miracle Church of God in Christ (various locations) |
| MCOG | Marbury Church of God (Maryland) |
| MCOG | Messianic Church of God (various locations) |
| MCOG | Mendenhall Church of God (Mississippi) |
| MCOG | Mystical City of God (Mary of Agreda book) |
| MCOG | Muon Collider Oversight Group (Brookhaven National Laboratory; Upton, NY) |
| MCOG | Major Clusters of Orthologous Genes (biology) |
| MCOG | Mattawamkeag Church of God (Maine) |
| MCOG | Merrymeeting Council of Governments (Maine) |
| MCOG | Montebello Citizens for Open Government (Montebello, CA) |