Diocesan Colleges
| S.No. | Institution Name | Parish | Address |
| 1. | Annai Vailankanni Arts & Science College | Old Housing Unit (Adaikala Madha Churh) |
Annai Vailankanni Arts & Science College, Bishop Sundaram Campus, Pudukottai Road, Thanjavur- 613 007 |
| 2. | St.John De Britto College of Education (M.Ed & B.Ed) | Old Housing Unit (Adaikala Madha Churh) |
Bishop Sundaram Campus, Pudukottai Road, Thanjavur- 613 007 |
| 3. | Our Lady of Health School & College of Nursing |
S.H.Cathedral | Our Lady of Health School & College of Nursing, Arulananda Nagar, 3rd Cross, Thanjavur – 613 007 |