NSI

• Faroe Islands
• International Air Transport Association airport code
• Location Identifier
• NASA Standard Initiator
• NSÍ Runavík
• National Savings and Investments
• National Screen Institute
• National Security Inspectorate
• National Security Institute
• National Security Intelligence
• National Space Institute
• National Statistical Institute (Bulgaria)
• National Student Index
• National systems of innovation
• Nationwide Suspicious Activity Reporting Initiative
• Naval Outlying Field San Nicolas Island
• Network Service Interface
• Network Solutions
• Neurological Society of India
• Neurosciences Institute
• New Slovenia
• New Zealand
• North Sentinel Island
• Northern Sydney Institute of TAFE
• Norwegian Scientific Index
• Slovenia
• The National Science Institute
• United Kingdom
• Winnipeg
• Yaoundé Nsimalen International Airport
• football (soccer)
• right-of-centre