✔ President, Cultural History Section, XVI, Annual Conference, South Indian History Congress, Gulburga University, Gulburga, February 9-11, 1996
✔ President, Section I, Ancient India, Indian History Congress, 57th Session, Madras University, Chennai, December 27-29, 1996.
✔ Sankara Parvathy Endowment Lectures, Madras University, Chennai, 1998.
✔ Endowment Lecture, 5th Annual Session, Tamilnadu History Congress, M.S. University, Tirunelveli, October 24-25, 1998.
✔ Professor Rajendran Endowment Lecture, Loyola College, Chennai, March 21, 2001.
✔ President, Historiography Section, 27th Session A.P. History Congress, Sri Venkateswara University, Tirupati, 4th January, 2003.
✔ Mamidipudi Venkatrangiah Endowment Lecture, 27th Session A.P. History Congress, Sri Venkateswara University, Triupathi, 4th January 2003.
✔ Hari Ram Gupta Memorial Endowment Lecture, Punjab University, Chandigarh, March 2004.
✔ Mamidipudi Venkatrangiah Endowment Lecture, Madras University, Chennai, March 2004.
✔ 51st South India Heritage Lecture, TAG Centre, Chennai, 30th April, 2006.
✔ Keynote Address, 28th Session of South Indian History Congress, Sri Krishnadevaraya University, Anantapur, Andhra Pradesh, January 19-21, 2008.
✔ Delivered Professor S Nurul Hasan Memorial Lecture on August 3, 2010 at Aligarh Muslim University, Aligarh.
✔ Delivered Mathura Lal Sharma Endowment Lecture, Kota Open University, Rajasthan in December 2010.
✔ Delivered a public lecture on invitation from CP Ramasamy Foundation on August 14, 2010 in Chennai.
✔ Invited to deliver Professor KA Nilakanta Sastri Memorial Lecture at Madras University, Chennai in 2011.
✔ Invited to deliver T. Balakrishnan Nair Memorial Lecture at University of Madras, Chennai, 2016.
