| Jurisdiction: | Diocese |
| Chingleput | |
| Latin: | Dioecesis Chingleputensis |
| Local: | செங்கல்பட்டு மறைமாவட்ட |
| Country: |  India |
| Province: | Madras and Mylapore |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Cathedral: | Saint Joseph's Cathedral |
| Area Km2: | 1,711 |
| Population: | 2,875,000 |
| Population As Of: | 2006 |
| Catholics: | 126,951 |
| Catholics Percent: | 4.4 |
| Parishes: | 110 |
| Metro Archbishop: | George Antonysamy |
| Website: | Website of the Diocese |
The Diocese of Chingleput (Latin: Chingleputen(sis)) is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in India. Its episcopal see is Chingleput. The Diocese of Chingleput is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Madras and Mylapore.
The diocese Diocese of Chingleput was established on July 19, 2002, from territory taken from the Archdiocese of Madras and Mylapore.
Bishop Anthonisamy Neethinathan is the first the current bishop of Chingleput in charge from July 19, 2002. Saint Joseph's Cathedral is the seat of power located in Chingleput. The bishop house is located in JK Nagar, Chingleput.
There are 11 vicariates in the Chingleput diocese.