| Acronym | Definition |
|---|
| NISF | Network Information Seed File |
| NISF | Naval Intelligence and Security Force (Philippines) |
| NISF | Northern Ireland Sports Forum (Belfast, Northern Ireland, UK) |
| NISF | Nursing Incentive Scholarship Fund (Kentucky) |
| NISF | National Institute for Soils and Fertilizer (Vietnam) |
| NISF | Nishimura International Scholarship Foundation (Japan) |
| NISF | Network Integration Simulation Facility |
| NISF | Nationales Insitut für Sozialfürsorge (German: abbreviation for Italian INPS (Istituto Nazionale della Previdenza Sociale) |