Adi Dravidar and Tribal Welfare Department : Adi Dravidar and Tribal Welfare Department is implementing all the programmes and schemes effectively for the economic and educational advancement of these people.
Prison Department : Prisons serve the public by keeping in safe custody those committed by the courts and treating them with humanity
Health and Family Welfare Department : Directorate of Medical Education, Directorate of Medical and Rural Health Services, Directorate of Public Health and Preventive Medicine etc are functioning under Health and Family Welfare Department
Transport Department : Transport Department is having, under its control 18 State Transport Undertakings, Tamil Nadu Transport Development Finance Corporation, Pallavan Transport Consultancy Services Ltd., Institute of Road Transport, Chennai and Motor Vehicles Maintenance
Forest Department : Various schemes and programmes of Government are aimed at restoring the degraded forest and expanding forests outside the Reserve Forest area.
Fire and Rescue Services Department : Fire and Rescue Services Department of the Government of Tamil Nadu is entrusted with the task of fire fighting and rescue operations in times of emergency.
Social Defence Department : Department of Social Defence is functioning under the Department of Social Welfare and Nutritious Meal Programme of the State Government