Kalnattur Sub-Center
| Hospital Name | Kalnattur Sub-Center |
| Address | Kalnatur Sc |
| Address Line2 | Main Road, Mariyamman Kovil |
| Location | Kalnatturputhur |
| Phone No. | N. A. |
| Mobile No. | N. A. |
| Facility | SubCentre |
| State | Tamil Nadu |
| District | Tiruvannamalai |
| Taluka | THANDRAMPET |
| Block | Thandrampattu |
| GPS Location | Latitude: 12.0518 |
| Longitude: 78.8496 |
Kalnattur Sub-Center hospital is a SubCentre in Thandrampattu. It is located in Tiruvannamalai district of Tamilnadu state. The GPS Location of this hospital is shown in the map below.