'''NSI''' or '''nsi''' may refer to: {{TOC right}}
== Organizations == === 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:<code>NSI</code>) * Yaoundé Nsimalen International Airport (IATA:<code>NSI</code>)
== Science and technology == {{seealso|#Scientific bodies}} * NASA Standard Initiator, an electrochemical device which plays a critical role in initiating various pyrotechnic events in the National Space Transportation System <!--* Network Service Interface, the interface between a station and the network in a mobile communications network -->* 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
==See also== {{canned search|nsi|n-s-i}} * NS1 (disambiguation) * NSL (disambiguation)
{{disambiguation}}