Thoothukudi - Nazareth Diocese was bifurcated from Tirunelveli Diocese on 25.10.2003. The first Bishop of our Diocese is Rt. Rev. Dr. J.A.D. Jebachandran, B.Sc., M.A., B.D., D.D. Our Bishop was consecrated on 02.04.2005. Consecration Ceremony was celebrated in the St. John's Cathedral church at Nazareth.
22 Diocese are coming under the membership of the Church of South India(CSI). CSI head office situated in chennai.