| Acronym | Definition |
|---|
| CNG | Compressed Natural Gas |
| CNG | Calling (Tone) |
| CNG | Corning (Amtrak station code; Corning, CA) |
| CNG | Comfort Noise Generation |
| CNG | Club Nautique de Giffaumont (French nautical club) |
| CNG | Calling Tone |
| CNG | Colegio Nueva Granada (Colombian college) |
| CNG | Conseil National de Gouvernement (French: National Council of Government; Haiti) |
| CNG | Cascade Natural Gas (Washington & Oregon) |
| CNG | Centre National de Génotypage (French: National Genotyping Resource Center) |
| CNG | Cryptography Next Generation (Microsoft Windows Vista) |
| CNG | California National Guard |
| CNG | Comisión Nacional de Garantías (Spanish: National Commission on Guarantees; Mexico) |
| CNG | Corporate Networks Group (NEC America) |
| CNG | Community Networking Group (various organizations) |
| CNG | Clube Nacional de Ginástica (Portuguese: National Gym Club) |
| CNG | Covering New Ground (Canada) |
| CNG | Comité National de la Gastronomie (French: National Committee of Gastronomy) |
| CNG | Cinéma Nouvelle Génération (French: New Generation Cinema; festival) |
| CNG | Chantier Naval du Golfe (French: Shipyard of the Gulf) |
| CNG | Campus Network Group (various organizations) |
| CNG | Carrier to Noise Generator (test instrument) |
| CNG | Connecticut Natural Gas Company |
| CNG | Coordination and Negotiation Group (telecommunications) |
| CNG | Coalition of Northeastern Governors |