| Country: | JPN |
| Type: | National |
| Route: | 347 |
| Map Custom: | yes |
| Length Km: | 90.1 |
| Length Ref: | [1] |
| Previous Type: | Route |
| Previous Route: | 346 |
| Next Type: | Route |
| Next Route: | 348 |
National Route 347 is a national highway of Japan connecting Sagae, Yamagata and Ōsaki, Miyagi in Japan, with a total length of 90.1 km (55.99 mi).
A segment of Route 347 between Obanazawa, Yamagata and Kami, Miyagi is closed in winter.