Thanjavur District was one of the districts in the erstwhile Madras Presidency of British India. It covered the area of the present-day districts of Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai and Aranthangi taluk, Karambakkudi taluk of Pudukkottai District in Tamil Nadu. Apart from being a bedrock of Hindu orthodoxy, Tanjore was a centre of Chola cultural heritage and one of the richest and most prosperous districts in Madras Presidency.