| Country: | JPN |
| Type: | National |
| Route: | 356 |
| Map Custom: | yes |
| Length Km: | 91.7 |
| Length Ref: | [1] |
| Established: | 1 April 1975 |
| Direction A: | West |
| Terminus A: | in Abiko, Chiba |
| Direction B: | East |
| Terminus B: | in Chōshi, Chiba |
| Previous Type: | Route |
| Previous Route: | 355 |
| Next Type: | Route |
| Next Route: | 357 |
National Route 356 is a national highway of Japan connecting Chōshi, Chiba and Abiko, Chiba in Japan, with a total length of 91.7 km (56.98 mi).