Jagannathan Thiruvallur Thattai is a businessperson who has been the head of 11 different companies and presently occupies the position of Non-Executive Chairman of TTK Prestige Ltd., Chairman for TTK Services Pvt Ltd. (a subsidiary of TTK Prestige Ltd.), Chairman of Manttra, Inc., Chairman at SSL TTK Ltd., Chairman at TTK Tantex Ltd., Chairman for Prestige Housewares India Ltd., Chairman of Prestige Health Administrator Pvt Ltd., Chairman at TTK Healthcare Services Pvt Ltd., Chairman for TTK-LIG Ltd. and Chairman at TTK Protective Devices Ltd.

He is also on the board of Cables & Wireless Networks India (Pvt) Ltd., ManipalCigna Health Insurance Co. Ltd., TTK Property Services Pvt Ltd. and TTK British Holdings Ltd.

In the past Jagannathan Thiruvallur Thattai occupied the position of General Manager for TT Maps & Publications Ltd. and Non-Executive Chairman of TTK Healthcare Ltd.

He received a graduate degree from Cornell University and an undergraduate degree from Indian Institute of Technology Madras.