The Department of Civil Security is an auxiliary force administered by the Ministry of Defence.

Sri Lanka Police is the civilian national police force of the Democratic Socialist Republic of Sri Lanka. The police force is responsible for enforcing criminal and traffic law, enhancing public safety, maintaining order and keeping the peace throughout Sri Lanka. The police force consists of 43 Territorial Divisions, 67 Functional Divisions, 432 Police Stations with more than 84,000 people. The professional head of the police is the Inspector General of Police who reports to the Minister of Law and Order as well as the National Police Commission. The current Inspector General of Police (Acting) is Deshabandu Tennakoon.