Sis

The initials SIS may stand for:

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• Satellite Information Services (Satellite Information Services).
• Schengen Information System
• Secret Intelligence Service (MI6, a British intelligence agency).
• Security Intelligence Service (either a Canadian or a New Zealand intelligence agency)
• Seoul International School (An international school in Seoul, Korea)
• Sequential Importance Sampling
• Signals Intelligence Service This United States Army group, codebreaking division headquartered at Arlington Hall
• Silicon Integrated Systems
• Single Instance Store A system for coalescing identical object instances to save space.
• SIS is the filename suffix for executable files for the Symbian OS operating system
• Slovenska informacna sluzba (Slovak Intelligence Service)
• Special Intelligence Service A secret FBI intelligence agency operating in South America during World War Two.
• Strategic information system An information system to support enterprises' strategy.
• Swedish Standards Institute (earlier named Standardiseringskommissionen i Sverige).
• Compare Sis - a settlement in Turkey.