CBCID

The Crime Branch CID supervises the investigation of interstate crimes, serious offences, anti-trafficking, terrorist offences and cyber crimes.

 STF

Special Task Force

 EOW

The Economic Offence Wing is responsible for detection of economic offences, commercial crimes and cases relating to non-banking financial companies.

 TS

The Technical Services Unit looks after the Police Telecommunication Branch (PTB).

 CSG

This Unit implements the Coastal security measures along the coastline of the State of Tamil Nadu.

 V & AC

This Department looks after the cases registered under the Prevention of Corruption Act in the State.

 TNUSRB

The Recruitment process of Uniformed Police in police, prisons, and fire services is carried out by the TNUSRB.

 TRAINING

This Department Controls the Police Training College at Chennai and the Police Recruit schools in District Headquarters.

 ENF

This Wing is responsible for the Enforcement of Prohibition Act in the State of Tamil Nadu.

 SBCID

This Unit looks after the Special Branch matters including Intelligence and Security.

 WELFARE

This Unit assists the DGP with regard to welfare matters of Police Personnel.

 ADMIN

This Unit assists the DGP with regard to service and career matters of police personnel.

 HEAD QUARTERS

This Unit assists the DGP in matters of provisioning and budget.

 L & O

The ADGP Law and Order, IGsP (North Zone, West Zone, Central Zone, South Zone) assist the DGP in the maintenance of Law and Order.

 CSCID

This Wing investigates cases under the Essential Commodities Act.

 HOME GUARD

This Unit supervises the auxiliary wings of Civil Defence and Home Guards.

 RAILWAYS

The Government Railway Police of Tamil Nadu has Statewide responsibility for prevention and detection of offences in Railway jurisdiction.

 ARMED POLICE

The ADGP, Armed Police is in charge of 11 Armed Police Battalions (Tamil Nadu Special Police) and 1 Regimental Centre at Avadi.

 REFUGEE CAMP

The Refugee Camp at Mandapam (Rameshwaram), has been opened for the Sri lankan refugees from Jaffna.

 HOUSING CORPORATION

The Police Housing Corporation undertakes construction of Police Quarters / barracks and housing for Police personnel under the 'Own your House' scheme

 STPC

State Traffic Planning Cell.