Organizations and Other Abbreviations
- National Ignition Facility, a US experimental fusion facility at Lawrence Livermore National Laboratory
- National Immigration Forum, a pro-immigrant advocacy non-profit organization based in Washington, DC
- National Islamic Front, a political party of Sudan
- Nationalist and Integrationist Front of Ituri, Democratic Republic of the Congo
- New Initiatives Fund, a funding programme of the United Kingdom Electoral Commission
- Neuroscience Information Framework, a repository of global neuroscience web resources
- New Israel Fund, an organization that funds social justice initiatives in Israel
- National Issues Forums, a US network of organizations and individuals who sponsor public forums
- Número de Identificación Fiscal, Spain's value added tax identification number
- 3D scene format of the Gamebryo/NetImmerse game engine
- Nudity is Freedom, a saying coined by the American Association for Nude Recreation
- NÍF Nólsoy, a former Faroese football team now known as FF Giza
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