| Acronym | Definition |
|---|
| NGI | Next Generation Internet |
| NGI | Natural Gas Intelligence (publication) |
| NGI | Navigazione Generale Italiana (Italian: Italian General Navigation) |
| NGI | Nationaal Geografisch Instituut (Belgium) |
| NGI | Next Generation Interface |
| NGI | National Grid Initiative (various nations) |
| NGI | Next Generation Identification (US FBI database) |
| NGI | National Gallery of Ireland |
| NGI | Norwegian Geotechnical Institute (Norway) |
| NGI | New Guinea Islands |
| NGI | National Genetics Institute |
| NGI | Natural Gas Initiative (Saudi Arabia) |
| NGI | Next Generation Infrastructure (research project) |
| NGI | Non-Government Individual |
| NGI | Natural Gas Inventory |
| NGI | Next Generation Impactor (trademark of MSP Corporation) |
| NGI | National Geographic Interactive (magazine) |
| NGI | Novations Group, Inc. (now Global Novations) |
| NGI | New Global Initiatives (Bethesda, MD) |
| NGI | Net Gamers Italia |
| NGI | Northwest Gemological Institute (Bellevue, WA) |
| NGI | Norges Geotekniske Institute (Norway) |
| NGI | New Generation Imagery |
| NGI | Next Generation Installation |