Railway Audit Directorate is one of the 10 Audit Directorates under the command of Office of the Comptroller and Auditor General (OCAG), Bangladesh. In the British period, it was named as “Chief Auditor Eastern Bengal Railway”. It was established along with Railway Accounts in 1930. It was separated from Railway Accounts in 1936 according to the Act of 1935. As per government order issued in 1974, the office was renamed as “Office of the Director General, Railway Audit Directorate”. In 1985, the name was again changed into “Office of the Director, Railway Audit” according to the report of Enam Committee.
Finally, on 29.09.1995 as per order issued by the Comptroller and Auditor General this office was named as “Office of the Director General, Railway Audit Directorate”. This office used to conduct audit over the Railway Division of Ministry of Communication. In 2011, Railway Division has been upgraded into the Ministry of Railways. After that Railway Audit Directorate is conducting audit on the activities and performances of the offices under Ministry of Railways.