| Country: | IND |
| Type: | RC |
| Route: | 18 |
| Territories: | Puducherry |
| Maint: | Public Works Department (PWD),Puducherry[1] |
| Length Km: | 11.415 |
| Junction: | RC-20 at Karikalampakkam RC-27 at Bahour RC-28 at Bahour RC-31 at Bahour |
| Districts: | Puducherry |
RC-18 or Villianur-Bahour Road starts from Villianur and ends at Bahour Junction.
It passes through the following villages: