Bharathidasan University (BDU) is a university in the city of Tiruchirappalli, Tamil Nadu, India. It is located on Tiruchirappalli-Pudukkottai National Highway 336. It has affiliated colleges in the districts of Ariyalur district, Karur, Mayiladuthurai district, Nagapattinam, Perambalur, Pudukkottai, Thanjavur, Tiruvarur and Tiruchirapalli. It is a recognised university, supported by the University Grants Commission of India.