India’s Intelligence and Investigation Agencies

India’s Internal Security is a topic specifically mentioned in UPSC Mains General Studies Paper 3. Though External Security is not specifically mentioned, as a Civil Services aspirant it is always good to be updated with current topics of national importance. National Security of India is a topic of high importance. Apart from the defense and paramilitary forces in India, various intelligence and investigation agencies too play their part.

PS : We have already published related articles about security forces which include Defense Forces and Paramilitary Forces of India. Also have a look at the Various Security Forces and Agencies and Their Mandate.

India’s Intelligence and Investigation Agencies

  1. Intelligence Bureau(IB) – Internal Intelligence
  2. Research and Analysis Wing (RAW) – External Intelligence – Similar to CIA of US
  3. National Technical Research Organisation (NTRO)
  4. Defense Intelligence Agency (DIA)
  5. Computer Emergency Response Team (CERT)
  6. National Technical Research Organisation
  7. Defence Intelligence Agency
  8. Joint Cipher Bureau
  9. Directorate of Revenue Intelligence
  10. All India Radio Monitoring Service
  11. Signals Intelligence Directorate
  12. Aviation Research Centre
  13. Directorate of Air Intelligence
  14. Directorate of Navy Intelligence
  15. Directorate of Income Tax (Intelligence and Criminal Investigation)
  16. Directorate General of Income Tax Investigation
  17. National Investigation Agency – Central agency to combat terrorism
  18. Central Bureau of Investigation (CBI) – Similar to FBI of US


  • Directorate of Enforcement (DE).
  • Directorate of Revenue Intelligence (DRI).
  • Narcotics Control Bureau (NCB).
  • Financial Intelligence Unit (FIU).
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