INL

• Bureau of International Narcotics and Law Enforcement Affairs, US
• Idaho National Laboratory
• Independent Newspapers, a New Zealand company
• Indian National League, a Muslim-based political party
• Institut des nanotechnologies de Lyon, a research institute in France
• Instituut voor Nederlandse Lexicologie ("Institute for Dutch Lexicology"), former name of the Instituut voor de Nederlandse Taal, part of the Dutch Language Union
• International Iberian Nanotechnology Laboratory

• Falls International Airport (IATA Code: INL), Minnesota, USA
• Inner nuclear layer, in the retina
• Integral nonlinearity, in electrical engineering, a measure of digital-to-analog converter or analog-to-digital converter accuracy
• Inter-National League, an ice hockey league

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