INL may refer to:
Organisations 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
Other 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