| Country: | JPN |
| Type: | National |
| Route: | 505 |
| Map Custom: | yes |
| Length Km: | 21.1 |
| Length Ref: | [1] |
| Established: | 1993 |
| Direction A: | West |
| Terminus A: | in Motobu, Okinawa |
| Direction B: | East |
| Terminus B: | in Nago, Okinawa |
| Previous Type: | Route |
| Previous Route: | 504 |
| Next Type: | Route |
| Next Route: | 506 |
National Route 505 is a national highway of Japan. The highway connects Motobu, Okinawa and Nago, Okinawa. It has a total length of 21.1km (13.1miles).