The Diocese of Chingleput is made out of the entire civil district of Kancheepuram in the State of Tamilnadu. The diocese of Chingleput was declared an independent new diocese by His Holiness late John Paul II on the 19th July 2002. Most. Rev. Dr. A. Neethinathan, was appointed as the first Bishop of Chingleput. Originally Chingleput diocese was making the southern stretch of the Archdiocese of Madras – Mylapore.
The preliminary preparations for the carving out of the new diocesan territory was initiated since 1987