CSI

• CSI (comics)
• CSI (franchise)
• CSI (novels)
• CSI (video games)
• CSI 300 Index
• CSI effect
• Calcite Saturation Index
• Caldera Systems, Inc.
• California Solar Initiative
• Camera Serial Interface
• Canadian Securities Institute
• Carnaby Street (radio programme)
• Carroll Shelby International
• Cauchy–Schwarz inequality
• Centre for Social Investigation
• Channel state information
• Chhatrapati Shivaji International Airport
• Chlorosulfonyl isocyanate
• Christian Schools International
• Christian Solidarity International
• Christian Surfers International
• Church of Scientology International
• Church of South India
• Church of South India Boys Higher Secondary School
• City Supermarket, Inc.
• Cité Scolaire Internationale de Grenoble
• Cité Scolaire Internationale de Lyon
• Cité des Sciences et de l'Industrie
• Civilian Saucer Intelligence
• Coherence scanning interferometry
• Coke Studio (India)
• Colegio San Ignacio de Loyola
• College of Southern Idaho
• College of Staten Island
• Commercial satellite imagery
• Commission Sportive Internationale
• Committee for Skeptical Inquiry
• Common System Interface
• Companion of the Order of the Star of India
• Complex specified information
• Computer Security Institute
• Computer Society of India
• Computers and Structures, Inc.
• Concours de Saut International
• Conditional symmetric instability
• Consorzio Suonatori Indipendenti
• Construction Specifications Institute
• Container Security Initiative
• Control Sequence Introducer
• Crime Stoppers International
• Crime scene investigator
• Cross of Solomon Islands
• Crystalline silicon
• CueSports International
• ITIL
• ON Semiconductor
• Order of the Star of India
• Railway Safety Commission
• specified complexity