| Country: | JPN |
| Type: | National |
| Route: | 297 |
| Map Custom: | yes |
| Length Km: | 107.0 |
| Length Ref: | [1] |
| Established: | 1 April 1970 |
| Direction A: | North |
| Terminus A: | in Ichihara, Chiba |
| Direction B: | South |
| Terminus B: | in Tateyama, Chiba |
| Previous Type: | Route |
| Previous Route: | 296 |
| Next Type: | Route |
| Next Route: | 298 |
National Route 297 is a national highway of Japan connecting Tateyama, Chiba and Ichihara, Chiba in Japan, with a total length of 107 km (66.49 mi).