Kulasekharapatnam is a town in the Thoothukudi district (formerly Tuticorin district) of Tamil Nadu, India. Kulasekharapatnam was an ancient port dating to the 1st centuries AD and was contemporaneous to the existence of Kollam, Cheran, and Pandyan port. Kollam served the Pandyas on the west coast while Kulasekharapatnam served them on the east coast connecting them to Ceylon and the pearl fisheries in the Gulf of Mannar facing the Tirunelveli Coast. The other ports on the Coromandel Coast were Kaveripumpattinam (Poompuhar) and Arikamedu (near Pondicherry). On the west coast, the ancient ports were Kodungallur and Barugachha (Broach) in Gujarat. Kulasekharapatnam lost its significance once Tuticorin became a big port.