| Country: | IND |
| Type: | NH |
| Route: | 77 |
| Length Km: | 177 |
| Map Notes: | Map of the National Highway in red |
| Map Custom: | yes |
| Direction A: | West |
| Terminus A: | Krishnagiri |
| Direction B: | East |
| Terminus B: | Tindivanam |
| Destinations: | Uthangarai -Tiruvannamalai - Gingee |
| States: | Tamil Nadu |
| Previous Type: | NH |
| Next Type: | NH |
| Previous Route: | 48 |
| Next Route: | 32 |
National Highway 77 (NH 77) is a National Highway in India.[1] This is the main National Highway to connect Pondicherry with Krishnagiri. It starts from Tindivanam in Villupuram district then runs westward till Uthangarai via Thiruvannamalai and then joins NH 48 at Krishnagiri. NH-77 runs entirely in the state of Tamil Nadu.[2]
NH48 near Krishnagiri, Uthangarai, Tiruvannamalai, Gingee, NH32 near Tindivanam[3]
Terminal near Krishnagiri.
near Uthangarai
near Tiruvannamalai
Terminal near Tindivanam.