The Madras Record Office, currently known as Tamil Nadu Archives (TNA), is located in Chennai and is one of the oldest and largest document repositories in Southern India.

Documents stored and archived in TNA are invaluable to researchers working on post-independence Tamil Nadu or British-era Madras Presidency.

[4][5] In 1672 William Langhorne the Governor of Madras presidency insisted on keeping records on all government transactions and its preservation for future.

These records were initially stored in council room at Fort St. George which is the present day Secretariat-Assembly complex.

This Indo-Saracenic building was built with open spaces for future expansion and constructed to provide maximum protection to the records.