Counterintelligence Service may refer to:
- Counterintelligence Corps (United States Army) (1917-1961)
- KOS (Yugoslavia), the Kontraobavještajna služba, the counterintelligence service of the Yugoslav People's Army
- MI5, the United Kingdom's internal counterintelligence and security agency
- Internal Counter-Intelligence Service, fictional British military organization from the UNIT audio plays by Big Finish
See also edit
This disambiguation page lists articles associated with the title Counterintelligence Service.
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