| Acronym | Definition |
|---|
| NIF | National Ignition Facility |
| NIF | NATO (North Atlantic Treaty Organization) Industry Forum |
| NIF | Norges Idrettsforbund (Norwegian sports organization) |
| NIF | New Israel Fund |
| NIF | Numero de Identificación Fiscal (Spain) |
| NIF | National Islamic Front (Sudan) |
| NIF | Network Information File |
| NIF | Neighborhood Information Frame |
| NIF | National Innovation Foundation (India) |
| NIF | National Issues Forum (various locations) |
| NIF | Neuroscience Information Framework (neuroscience resources network) |
| NIF | Note Issuance Facility |
| NIF | NCOIC (Network Centric Operations Industry Consortium) Interoperability Framework |
| NIF | Negative Inspiratory Force |
| NIF | National Immigration Forum |
| NIF | National Insurance Fund (Great Britain) |
| NIF | National Investment Fund (Poland) |
| NIF | Neighborhood Investment Fund (various organizations) |
| NIF | NetImmerse File |
| NIF | Newsletter on Intellectual Freedom (American Library Association) |
| NIF | Notation Interchange File |
| NIF | North Island Facilities Ltd. (Manhasset, NY) |
| NIF | Not In File |
| NIF | Navy Industrial Fund |
| NIF | No- Image Forming (light) |
| NIF | Non-Invasive Flow Study |
| NIF | Neighbor Information Frame (FDDI) |
| NIF | Non-Instructional Faculty (various organizations) |
| NIF | Network Integration Facility |
| NIF | Network Interface Function |
| NIF | Neutral International Force (in Rwanda) |
| NIF | Nordic Industrial Fund (Denmark) |
| NIF | Network Initialization File |
| NIF | Navy Inactive Fleet |
| NIF | Native IP Forwarding |
| NIF | NATO Interoperability Framework |
| NIF | National Iota Foundation |
| NIF | Noise Improvement Factor |
| NIF | Network Information Flow |
| NIF | NATO Interface Facility |
| NIF | Non-Industrial Facilities |
| NIF | Nuclear Information File |
| NIF | No Indirect Fire |
| NIF | Not Industrially Funded |
| NIF | Norges Sivilingeniorers Forening |
| NIF | Never In Field |
| NIF | No Intelligent Friends |