Thirukostiyur (திருக்கோஷ்டியூர்) — Tamil Nadu
| Name | Thirukostiyur |
| Local Name | திருக்கோஷ்டியூர் |
| Villages | Sullankudi, Thanipatti, Tirukostiyur, T. Vairavanpatti |
| Type | Gram Panchayat |
| Intermediate Panchayat | Thiruppathur |
| Block | Tiruppathur |
| District Panchayat | Sivagangai |
| State Name | Tamil Nadu |
| LGD Code | 228316 |