| Country: | JPN |
| Type: | National |
| Route: | 426 |
| Map Custom: | yes |
| Length Km: | 49.6 |
| Length Ref: | [1] |
| Previous Type: | Route |
| Previous Route: | 425 |
| Next Type: | Route |
| Next Route: | 427 |
National Route 426 is a national highway of Japan connecting Toyooka, Hyōgo and Fukuchiyama, Kyoto in Japan, with a total length of 49.6 km (30.82 mi).