FNI

FNI may refer to:

• Fania language, spoken in Chad
• Fellow of the Nautical Institute
• Frankfurt Niederrad station, in Germany
• Friday Nite Improvs
• Fridtjof Nansen Institute, a Norwegian research institute
• International Naturist Federation (French: {{lang|fr|Fédération naturiste internationale}})
• National Car Registration Record (French: {{lang|fr|Fichier National des Immatriculations}}), the 1950-2009 French car registration system.
• Nationalist and Integrationist Front (French: {{lang|fr|Front des Nationalistes et Intégrationnistes}}), a rebel group in the Democratic Republic of the Congo
• Nîmes–Alès–Camargue–Cévennes Airport, in France

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