| Holy Trinity Cathedral | |
| Map Caption: | Location in Tamil Nadu |
| Coordinates: | 8.7265°N 77.7271°W |
| Native Name: | தூய திரித்துவ பேராலயம் |
| Country: | India |
| District: | Tirunelveli, Tamil Nadu |
| Location: | Palayamkottai |
| Architectural Type: | UK 1820s |
| Completed Date: | 1826 |
| Architect: | C. T. E. Rhenius |
Holy Trinity Cathedral is the cathedral church of Tirunelveli Diocese under Church of South India. Marvellous Church Crafted with the help of God.
R Joseph served as the senior pastor of Holy Trinity cathedral from 1987 to 1992.A Dhanapaul Devaraj serving as Cathechist from 2010