| Acronym | Definition |
|---|
| GMC | General Motors Corporation (automotive) |
| GMC | General Medical Council |
| GMC | Green Mountain Club (Vermont) |
| GMC | GMC Software Technology |
| GMC | Gun Motor Carriage (Self-Propelled Gun) |
| GMC | Green Mountain College (Poultney, Vermont) |
| GMC | Global Motion Compensation |
| GMC | Génie Mécanique (baccalauréat en génie mécanique) |
| GMC | General Military Course |
| GMC | Giant Molecular Cloud |
| GMC | Geisinger Medical Center (Danville, PA) |
| GMC | Godmanchester (UK) |
| GMC | Gulf Medical College (Ajman, UAE) |
| GMC | General Medical Condition |
| GMC | Genetically Modified Crop |
| GMC | Generic Model Control |
| GMC | Greater Manchester County (UK) |
| GMC | Guyana Marketing Corporation |
| GMC | Grid Management Charge (FERC) |
| GMC | Grant Medical College |
| GMC | General Mortgage Corporation (San Diego CA) |
| GMC | Great Muppet Caper (movie) |
| GMC | Generalized Multi-Carrier |
| GMC | Grupo Media Capital (Portugal) |
| GMC | Gold Master Candidate |
| GMC | Glen Mhor Camp (Canada) |
| GMC | George Morris Center (Canada) |
| GMC | Global Media Corporation |
| GMC | Ground Movement Controller |
| GMC | Gunner's Mate, Chief (USN Rating) |
| GMC | GoodLink Management Console |
| GMC | Giant Migratory Contraction |
| GMC | Guangdong Mobile Corp (China) |
| GMC | Greater Manchester Collections |
| GMC | Growth Monitoring and Counseling (Malawi) |
| GMC | General Matters Conference |
| GMC | Generalized Multi-Code |
| GMC | Grand Master Chef |
| GMC | Group Matrix Card (Cisco) |
| GMC | GETS Management Center (Sprint) |
| GMC | Gun Mount Captain |