The Intelligence Bureau (IB) is primarily responsible for internal security and counterintelligence in India.

The National Investigation Agency (NIA) is the primary agency responsible for coordinating counterterrorism efforts in India.

The Multi-Agency Centre (MAC) is a central coordinating agency for counterterrorism in India.

The Research and Analysis Wing (RAW) is responsible for gathering foreign intelligence in India.

The National Security Council Secretariat (NSCS) is responsible for formulating and coordinating national security policy in India.

The National Investigation Agency (NIA) is responsible for investigating and prosecuting terrorist activities in India.

The National Technical Research Organisation (NTRO) is responsible for cybersecurity and technical intelligence in India.

The Multi-Agency Centre (MAC) is responsible for coordinating intelligence sharing among various agencies in India.

The Central Bureau of Investigation (CBI) is primarily responsible for investigating financial crimes and corruption in India.

The Special Protection Group (SPG) is responsible for providing security to the Prime Minister of India.

The National Disaster Management Authority (NDMA) is responsible for coordinating disaster management efforts in India.

The Border Security Force (BSF) is responsible for securing India's borders.

The main objective of the National Investigation Agency (NIA) Act, 2008 is to establish the NIA as a central agency for counterterrorism.

The Military Intelligence (MI) is responsible for providing intelligence support to the Indian Armed Forces.

The National Security Guard (NSG) is primarily responsible for counterterrorism operations in India.