| Country: | IND |
| Type: | SH |
| Route: | 81 |
| State: | Tamil Nadu |
| Maint: | Highways and Minor Ports Department |
| Length Km: | 85 |
| Terminus A: | Gobichettipalayam |
| Terminus B: | Dharapuram |
| Districts: | Erode, Tirupur |
Tamil Nadu State Highway 81 (SH-81) is a State Highway maintained by the Highways Department of Government of Tamil Nadu. It connects Gobichettipalayam with Dharapuram in the western part of Tamil Nadu.
The total length of the SH-81 is nearly 90 km. The highway merges with State Highway 172A at 85 km from Gobichettipalayam in between the towns of Uthukuli and Kangeyam in Tirupur district.
Route: Gobichettipalayam – Kunnathur – Uthukuli – Kangeyam – Dharapuram
The highway passes through the following places:
The highway meets the following arterial roads along the way: