NSI

NSI or nsi may refer to:

Government and politics

 * National Savings and Investments, United Kingdom
 * National Security Intelligence, Bangladesh
 * National Statistical Institute (Bulgaria)
 * Nationwide Suspicious Activity Reporting Initiative, an American law enforcement program
 * New Slovenia, a Slovenian political party
 * North-South Institute, a Canadian think tank

Scientific bodies

 * The National Science Institute, an American educational organization
 * National Space Institute, an American advocacy group
 * Neurological Society of India, an Indian body for neuroscientists
 * The Neurosciences Institute, United States

Other businesses and organizations

 * National Screen Institute, a non-profit organization in Canada
 * National Security Inspectorate, home security trade organisation in the UK
 * Network Solutions, LLC., formerly Network Solutions Inc., a technology company founded in 1979
 * Northern Sydney Institute of TAFE, an Australian vocational training provider
 * NSÍ Runavík, a Faroe Islands football team

Places

 * North Sentinel Island, Andaman Islands, India
 * Naval Outlying Landing Field San Nicolas Island, a military airfield in California, US (FAA LID: )
 * Yaoundé Nsimalen International Airport (IATA: )

Science and technology

 * NASA Standard Initiator, an electrochemical device which plays a critical role in initiating various pyrotechnic events in the National Space Transportation System
 * Nitrogen solubility index, a measure of the solubility of a protein
 * Norwegian Scientific Index, a bibliographic database aimed at covering and rating all serious academic publication channels worldwide
 * .nsi, a text file extension used by Nullsoft Scriptable Install System

Other uses

 * National Student Index, a system to identify New Zealand students
 * National systems of innovation