Last Updated: July 2022 What is CBI? Central Bureau of Investigation (CBI) is the premier investigating police agency in India. It provides assistance to the Central Vigilance Commission and Lokpal. It functions under the superintendence of the Deptt. of Personnel, Ministry of Personnel, Pension & Public Grievances, Government of India - which falls under the prime minister’s office. However for investigations of offences under the Prevention of Corruption Act, its superintendence vests ... CBI ... What does CBI mean? Central Bureau of Investigation (CBI) is a government agency of India that serves as a criminal investigation body. The Central Bureau of Investigation (CBI) is the domestic crime investigating agency of India. [4][5] It operates under the jurisdiction of the Ministry of Personnel, Public Grievances and Pensions. Guide to the Full Form of CBI. Here we discuss the history, role, start function and structure with impact and important pints in CBI.