| Acronym | Definition |
|---|
| GNC | General Nutrition Centers |
| GNC | Gas Natural Comprimido (Argentina) |
| GNC | Geek News Central (technology news) |
| GNC | General Nutrition Corporation (various locations) |
| GNC | Guidance, Navigation, and Control |
| GNC | Greg Norman Collection (golf) |
| GNC | Gender Non-Conforming |
| GNC | Gaz Naturel Carburant (French: Natural Gas Fuel) |
| GNC | General Nutrition Companies (nutritional supplements) |
| GNC | Grand National Championship (ATV racing) |
| GNC | Ghana National Council (Chicago, IL) |
| GNC | Globally Networked Customs (World Customs Organization) |
| GNC | Governance and Nominating Committee (corporate governance) |
| GNC | Good News Club (Child Evangelism Fellowship) |
| GNC | Global Navigation Chart |
| GNC | Gobierno Nacional Central (Colombia) |
| GNC | Gram Negative Cocci (bacteria) |
| GNC | Greenburgh Nature Center (Scarsdale, New York) |
| GNC | Graduated Non-Convexity (image processing algorithm) |
| GNC | Green National Committee |
| GNC | Greater Newark Conservancy |
| GNC | Getting Needed Care (health scale) |
| GNC | Guidance and Navigation Computer |
| GNC | GMFSC Network Controller |
| GNC | GMF Network Controller |
| GNC | Gaz Non Conventionnels (French: Unconventional Gas) |
| GNC | Groupement National Carpe (French: National Carpe Group; fishing association) |
| GNC | General Navigation Compute |
| GNC | Graph-Node Coloring |
| GNC | Generalized Nyquist Criterion |
| GNC | Geriatric Nurse Certified (healthcare) |